N.F.
I would not try working with her. I am a stepmom to a 7 year old as well. My fiance has sole physical legal custody and it is his decision of he sees her or not. Any ways we have always been nice to eachother eventhough I cannot stand her. We had one argument and she tried to use it against me in court to get the custody reversed and it failed. I would be very careful and not initate anything. She may just be nice because she is looking for something to use. I would be respectful and that is it. Offer no information that is not needed!