Welcome Kartusch!

It sounds like you are a single mom with a 7 yr old, and a uBPD mom, and she has been involved in your daughters life in a positive way, up until recently.
I'm just wondering if you have had a chance to become familiar with the resources on this website...no need for me to be redundant if you already are...there is some really good stuff there if you haven't stumbled into it yet
https://bpdfamily.com/message_board/index.php?topic=334882.0My biggest concern of late (that led me to officially addressing this) is that my mom has begun attacking my daughter (7 yrs old). I'm seriously struggling with keeping distance between them. Their bond up until now was so loving and they are the only grandparents my daughter has.
Can you tell us more about how she is behaving with your daughter (your concerns), and how her behavior towards your daughter has changed? i.e. how it is different from what it was before?
Also, is she any different with
you right now, or just your daughter?