Firstly
@Divorced w 3 based on her actions throughout, you DO have reason to mistrust her imo. Very much so.
And as such, I find her response suspect and may actually prove the opposite of what she's attempting to prove, if that makes sense.
It was overkill, too over the top and overly defensive. Again, a truly innocent person does respond that way imo.
They'd be more inclined to be hurt and angry at YOU for not trusting them, I know I would be if roles were reversed.
Also, the comment she made as you were kicking her out about how her lack of presence in your kids lives would hurt them, I find highly manipulative.
Using her relationship with YOUR kids to somehow hold you. It was extremely manipulative imo, guilt-trippy, and wrong.