D.B.
I'm confused. You posted a big thing about her weight and baby fat, and how the mother gets mad when you bring it up. You said you bought the child a book and work on serving healthy food and snacks. By the time I glanced back at your prior posts and then clicked on this to answer it, the whole post had changed to an issue of physical custody and how sneaky the child is and how there's child support involved. So what's really going on here, Rachael? What is your primary concern?
We've told you in prior posts that you are overly involved. I'm happy to see that you changed the label in this rewrite to "stepdaughter" from your prior insistence (including the edited post) on using "our daughter" all the time. But again - this is a coparenting issue, and it's between your husband and his ex. Your job is support.
Based on what you've said before, I have to wonder if the mother is sick and tired of fighting with you two and of being criticized, and she is willing to give you 100% responsibility for her daughter so you can see how hard this really is. I'm a stepmother, as I have told you before, and I can tell you that this endless conflict will not end well. It won't. This child is going to be totally confused about living arrangements and the conflict between her mother and father (with her stepmother thrown in as another layer of drama), and she's going to know that she's a bargaining chip among 3 people who can't work together. It's all about battling, isn't it? You apparently have stopped worrying about stories/drama and shaved legs (prior posts) and weight (the post you wrote here and then changed to physical custody/child support).
Family counseling. Now. No change in that advice. You seem to be careening from one issue to another, switching focus faster than we can keep up. This is a horrendous way to raise a child. Your husband and his ex need counseling, and you need help navigating the perils of stepparenting.
Edited to Add: I see you have changed your name from Rachael to A.. I'm a little worried that someone has gotten into your account and is changing your posts.