This is going to sound un-helpful but I've been in the game longer than it sounds like you have and I've learned it's the only way to go:

Ignore her.

Just ignore her. Don't let her take up space in your head. Give a brief thought to how pathetic she is that she wants to be so much like you she does such ridiculous things and then move on. Evict her from your head, stop letting her take up any of your time thinking about her. She's not worth it.

I agree... The BM I deal with is the same way... I was pregnant when FDH and I started dating... We never told her my DD isn't FDH's so she goes and gets preggers right away. We were in the market to buy a house last year, she has to buy a house. When we told her we were pregnant again (#2 for me) she wants another baby... Honestly ignoring her is the best way to go.

You can't constantly try to one up her... I mean thats what shesdoing, unless you wanna be at constant battle between who does it first, or better... Personally, not the way I'd wanna live my life

Block her then you won't be able to see anything she writes. Plenty of women have children past the age of 40.

If her husbands makes enough to support her and their new baby, then she doesn't have to work. She may have insurance through her husband's job.

Ignore her. You can't be annoyed if you don't know what she's doing.

Completely ignore what going on. I've been dealing with this for 3 years. Block her on facebook. Be nice to her when you see her. Learn the phrase "that is wonderful" and say it if you ever have something ugly to say. Also remember that you know you're awesome and she clearly knows your awesome and if she was going to try to be like somebody why not you?
Everytime I cut my hair (bangs, color, cut, est.) my step daughters mom does the same exact hair style a week later. When my husband and I got engaged she tried pushing her boyfriend to marry her. Then dumped him moved in with another guy and tried to get him to marry her. Then dumped him started dated a guy with kids...you get the picture. Then when we announced we were pregnant she started talking to people at work about how she wished she could have another baby. She even used the same name we said we were going to use lol. I just learned to let her copy me because her daughter sees her doing it and it just makes her look up to me more.

Although I admit I was curious about things BM would post on fb, I did eventually have to delete her. It was just causing me way too much stress and drama that I did not need! I have no contact with her whatsoever and it is much easier that way! I know she does things just for attention (seems like all BMs do) but the less it works, the less she will do it! Don't give her the attention she is so desperate for.

Wow, how pathetic that so many of the BMs in our lives are like this, mine included! When DH and I got engaged, BM wasn't even dating anyone. I heard from BM's mother that she was crying about how she couldn't find love. Three months later, she dredges up some old high school flame and suddenly they're engaged too. They were supposed to get married a month after us, but ended up pushing their wedding back another 6 months. I came to find out years after DH and I had our daughter that BM tried to get pregnant at the same time as me, but couldn't. I guess Mother Nature doesn't always allow for revenge babies.

if anything, have pity on her that her own life is so unfulfilling that she has to try to keep up with her ex. It's pathetic and sad. I have an ex husband and couldn't care less what he's doing. She obviously cares way too much about the goings on of her ex and can't even make her own life decisions. And any guy who goes along with that is even more pathetic and sad.