e 2nd part, I got tired of her yelling at our D (I feel she can be borderline verbally abusive at times), and was just trying to pull her out of that situation.
And to be quite honest, that, and the instances where she has put our D in less than ideal safety situations (including last week where she left our D2 alone in the bath while she went and did other chores around the house) make it very difficult to trust her enough to get out of the house anytime soon.
Hrm. If you're only going to be living together a short time--didn't you say four months?--trying to control her behavior wouldn't seem to achieve much long-term. In 6-12 months your ex-W will be free of you. Wisdom moment. Is she fit? If so, learn to let go. Is she unfit? If so, instead of interfering, you probably want to work on a strategy with your attorney that includes documenting her interactions in some legal way so they have ammo to push your ex-W towards getting whatever help she needs to be a fit mom.