"I just think you can't get over the fact that I'm with lots of other men now and that I just love slutting around. Well no one tells me what to do -- I do what I want."
Thanks to email, she's given you some pretty damning stuff to document! Pair the above with her Mother's Day tirade, and it will be abundantly clear to anyone you show it to (say, a judge) that she does whatever she wants IRREGARDLESS OF THE EFFECT ON THE KIDS.