She's STILL running away!!!!

[MrBond]

IMHO, you should pack her bag and tell her that you will not be disrespected. That you've been open with her, calm and caring and that you will not take nor tolerate her behavior. And that if she continues to carry on, she is welcome to leave without the kids.

Sometimes a man's got to re-assert himself. Not in a sexist way, but just to show that you aren't going to take it any longer.

Keep it level-headed and cool, yet not like you're giving in.