Hey Poppy,
I told my husband that until he starts to work on HIS relatiobship with his mom and he truly feels that she is trying to make some behavior changes, I don't feel comforable with her having any involvement with our 3 kids because imo she's quite volatile. I base this decision in my knowledge of child dev't, my own personal baggage, my husbands struggles with being more open and honest with FOO that i can't take credit for, and the fact that my mil has no problem openly berating me right in front of My H (yes, he did finally hear it in person)...BUT he doesn't quite get it. So...I don't feel comfortable when he says all would be fine as long as he's with the kids the whole time she's around.
oh yeah, and me going with my husband to start laying some boundaries was not a healthy choice for me on so many levels because of my baggage.
SOrry for rambling. My similar situation has given me huge anxiety and having a hard time sleeping. anyway, I hear ya sister!
jill e bean