I'm personally very bad at causing conflict, I'd probably start looking for my own place, and let him know I'll come back when she's moved out.  Others on here can probably give you ideas on how to make it hard on her, but be prepared for your husband to come down on you like a load of bricks. 

From what you've described your SD will just go to your DH who is spineless.  SD doesn't want to move out so she needs to be told to do so. 

I actually like Tog's plan with one modification - tell DH that SD is too old to live at home and needs to move out in 30 days.  If he balks then say OK, you'll move out temporarily and will only return when she's gone.  

Stop being so meek and mild. Tell your dh (because the problem is with him) that you didn't think he was such a pathetic apology for a man when you married him and that you hadn't realized he was already married to his daughter. That you thought you were marrying a MAN and not a nanny. Then tell him how disappointed you are in him... and let him think it over here. 

If he doesn't get up, give up. Why waste the rest of your life on someone who doesn't put you first!  

This may be the only way to get it done. Be prepared though your DH may never make her move out even with you gone. BUT that will give you clarity as to who he is really married to. 

Other than that I cannot think of anything. I think no matter what you do DH will resist or get angry. What you really should be asking yourself is what keeps you with a man who worries more about his adult DD than his wife. Heck dont get me wrong, I was you but my SD was younger. I put up with so much watching them as a married couple and I was the extra. Dont feel bad so many of us have or still are just like you.

Seriously? Read the answers to your last six or so posts.

I don't think you're going to be able to make the SD uncomfortable without making yourself more uncomfortable (due to problems with your husband).   There is no reason he needs to give her seven months to get out.  This is a grown woman who is gainfully employed and has had years to save for a place.  She can easily afford an apartment in a month or two.  If it was me, I'd move out until she's gone.  I suspect if you stay the seven months will come and go and she'll still be there.  You need to take a much tougher stand with your husband because he's either too weak or has no desire to stand up to his daughter.

You will have to get to the stage of your fear of the thought of living with your SD forever is greater than the fear of the potential loss of your marriage. There is no way to get what you need and want without risk. If you do not want to take that risk right now, that's OK. But keep in mind that that means you will have SD as your sister wife as long as you are not willing to take that risk. There is no other way than to take that risk and tell your DH how you want it. There is no way of making your SD uncomfortable to get her to move out. She will have to be evicted and it will have to be your DH to do it. He will not do it until you require him to. I stand by what I said on your last blog. 

Pay two or three months rent.  Tell SD to move.  Either by herself or with her father.  Then she is on her own 

1.) Make her park on the street. If she can't do that, make her park behind your cars and move her car every time you need to go somewhere. And make sure you need to go places often.

2.) All of her stuff and life happens in her room. No hanging out in the living room or basement or wherever. All her stuff gets stored there. She leaves shoes by the front door? Toss them in her room. Keys? Room. Mail? Room. Physically make her boundaries her room.

3.) No friends or partners can stay after 8PM. If she can't abide by that, no one comes over. And if they're over, they are confined to her room or outdoors. And no more than one person at a time. If she tries hanging out in common areas, hang with them, or do chores, or make a phone call, or whatever to disrupt them.

4.) She buys her own food and cleans her own dishes. Dirty dishes get tossed in her room to be cleaned. If they are your dishes, lock them up and she can buy her own. Food should be labeled - or she gets her own shelf in the fridge and freezer.

5.) She pays part of the internet or she doesn't get the password for Wi-Fi.

I'm being 100% serious with these suggestions. I lived with my parents as an adult after I got divorced, and feeling like a kid again made me get my life together fast. If she isn't paying her portion of rent and utilities, then she's a child. If she's paying, then she's a roommate who gets whatever she pays for. I was "roommate" status with my parents because I paid rent, but it was steeply discounted so I got the bad parking spot, only my room and bathroom, access to common foods like milk for my coffee, etc.

If you can't do these things because your DH will divorce you, then realize that your SD isn't going to move out. Your DH has to be on board with this and you can't be more afraid to lose him than you are adament about having peace in your home.

I would seriously consider getting a small place for yourself. If after tax returns and stiimulus xhecks she hasn't found a way to move out. She isn't going to. No as long as DH doesn't push the issue. 

It's time to make yourself happy.

My vote is for no.

You need to tune DH to 30 days or less.  She has been there for years.

The time is now.

it’s weird how the sd’s age changes every time you post.

She will never be gone. And she could trump up a crisis n move back in...and your enmeshed spouse will let her.

How do you think things will change once she moves out? If dh is enmeshed and emotionally incestuous with her, that will continue and you will be treated worse because you are the reason their love affair will become inconvenient for them. 

My ex 23 yo sd moved out...no thanks dad for letting me suck off of you for free. She was angry and angry kidaults who are enmeshed with daddy will still make your life hell because DADDY isn't changing his relationship with her. Your life n marriage may be worse after she moves out if your dh is in love with her (meaning if you feel like the ow in your marriage now, that won't change)

7 months of hell (I think sd will make it worse for YOU) with daddy's full support.

I could be wrong, I don't live in your house. But if your dh defends sd over you...that never changes. And she'll be back...to visit, etc. Daddy will be at her place helping her fix things etc to the neglect of your marriage.  If your dh treats you second now, that won't change unless HE changes.

I don't mean to sound like Debbie downer...it happened in my case. I am now divorced and live in peace.

Maybe the question is how will YOU take care of YOU while she still lives there? The stress meter might go way up. 7 months is a looong time for sd to think of ways to smear n hurt you n try to sabotage your marriage.  She will fight...she's losing her free ride n she knows Daddy will back up her abuses of you as he does now.

I could be off here cuz I don't know how your dh treats you on the daily. But if you are not no. 1 now, you won't be even with sd gone.

Maybe start saving money and plan your own exit. Not divorce necessarily but away from the pain triggers so you can destress and see how YOU really feel about your marriage.  If sd didn't exist and she was another woman, how would you feel? I say that because I felt like the other woman in my own house n my sd ran around almost naked etc in front of us to show me her claim on her dad. She was 23, a stranger to me, and they were soo close (I won't get into that)...to me, she WAS an ow living in my house. Literally.

If your dh respects you as no. 1, I think he'd do anything to get you back and then the choice will be all his...no blame on you for her moving out...and you will see if he chooses you over her. 

Just my 2 cents. I hope you find peace!

Prior to marrying.

about 2+ yrs in i told hubby i would not remain in marital home any longer wIth his useless adult son making me and our 2 little kids made to feel unwelcome in a home i care for that hubby moved into barely a week before we married.

i am finishing my university studies in my birth country o/seas and have my 4 & 5 yr old with me since almost 2 yrs ago. 
 

my husband bought a home for us to live in thats in my name and that is where me and our kids live in. Never will i spend another day with skidults in any home i live in. This is a toxic free household, I don't need to deal with or tolerate shitty behaviour/attitude and intentional shunning, i do not need to be subjected to sd's cheap ass digs at me or my 2 kids, they have been out of my life since end 2018

hubby caved into them always until he realized it was worser to disrespect me and piss me off and was forced to call them out on their crap behaviour 

Not sure the intent of your question - do you want to play games or do you want to put boundaries in place?

I wouldn't play games. Take the high road.

If you are attempting to put boundaries in place, set rules for the house as you would with a roommate (pay towards expenses, cleaning schedule, etc.). Of course, your DH needs to take the lead on this............. will he?

Don't give her a new key.

Keep it simple.