Until he realises that he is part of the problem,  nothing will change. The more he bails her out, the more she will expect. How does he think she will manage when he is no longer there?

How are his retirement funds? Are you and your son being deprived because he's giving all his money to his daughter? How do her sisters feel about her getting everything handed to her?

Next time she and the baby go somewhere, have the trailer moved to a consignment dealership and sell it.  

Zero tolerance is the way to go.  The baby would be far better off with CPS and in the system than with this toothless scamming moron.

Your DH is setting absolutely the wrong example for his/your young one.

I've talked to my husband so many times, I've told him how much this is bothering me. I have so much resentment towards her.

We are all on the same boat here. Welcome aboard, come here, read, vent, sometimes it's all you can do. Because with these SKids there are solutions many times (some not), maybe harsh, but still solutions, however Bio parents - with weak parenting skills - don't have the guts to execute and they keep prolonging the horrible situations acting out of pure emotions, fear, so-called luv for their hatchlings, and no logic. BPs don't realize that these kids just make everyone's lives miserable...

I have no advice but I have to ears to listen, two eyes to read and a shoulder should you need it. Welcome. 

Vent as much as you need to.

I also recommend reading a bunch here too. You will see how others are dealing with it, as well as much in the way of commonality. Another Member - JRI has a huge enabler problem between her elder DH and 60 plus yr old SDm whose kids wont have much to do with her.

And they also subsidise their SD.

A few ideas to ponder:

1. For all the $$ he gifts SD, he needs to match it in a household bucket account, or better yet a retirement account YEP. He works hard now? See what happens when you expect him to double up.

2. Give her some expectations. Maybe she can help you out? Household stuff because you definiely do NOT want her at all involved in the business.

3. You do nothing more for her. Stop with the Co-enabling.

4. Separate finances as much as you can. Make certain YOU and bio are covered with life insurance and that YOU have retirement account.

Good first post, maybe break it into paragraphs...

I have a similar situation here with SD62 who I think of as The Grifter.  Since her divorce from her DH#2 14 years ago, my DH has been propping her up.  I won't go into all the gruesome details but there were 2 apartments from which she was evicted, car trouble, legal expense, utility bills, misuse of our credit card, on and on.  Then it got worse cuz she moved in here for a year when she made our lives hell with her drug use, theft and craziness.  She did get on disability and has some legitimate health issues all made worse by poor diet and drug use.

I was beside myself, was starting to have stress-related health issues and knew she had to go.   I knew DH would always take care of her, he sounds a lot like your DH.  I realized we'd have to supplement her disability to get her into someplace else.  So, I proposed to DH that I was good with us paying $x monthly but no more.  We agreed to separate finances and he gets a monthly "allowance" out of which he pays her housing cost.  If he chooses to spend more for whatever she can wheedle out of him, that's his business but not one penny more out of the household funds and no use of our charge.

We have those same discussions about "what if he dies", after all, he is 85.  I have made clear to him that I won't be able to continue her support.  Her 3 adult kids all keep their distance from her.  (Last week, she created a scene at her son's workplace and was escorted out by security.).  Frankly, it would be a blessing if she passed before DH.

In a perfect world, DH would wake up, stop supporting her and she would miraculously transform into a self-supporting adult.  Until that day, this is the best I could do:  recognize that he will always respond to her but create a limit so that family funds aren't drained more.

In your case, I'd be concerned about the retirement fund.  I'm 72 and our retirement fund is about half of our income and I thank heavens we have it 

Good luck I know where you're coming from.  It's hard.

Your DH set himself up as the ATM of his kids life. It's hard to stop this dysfunctional behavior l. Dysfunctional because the kids are happy with the ATM not having to work at it themselves. If the kids are 33 what means DH is in the 50's. It's reall too late for retirement planning/ funding. You need over a million in 15 years   Or putting away $70,000 a year.