watchingclosely,

. I am so glad that you found our site. It is great that you and your wife are talking to a therapist.
I am a grandma, too. My daughter has kept my grandson away from me for one day. However, I am the only one that she has, and she needed me to watch my grandson. So, it was more of her need for me that she didn't keep him away for long. And, I am sure that it killed her pride to call me to watch my grandson.
As grandparents, you can provide your grandchildren with a loving, stable environment.
What is she demanding an apology for? Can she validate her "feelings" and apolgize for what her dd is feeling. IMHO, I would apolgize, if it means the end result is to see your grandchildren.
Here is a good link in reducing conflict:
Video-Tools to Reduce Conflict with a person suffering from BPD Here are the top questions asked about BPD:
Top 50 most often asked questionWhen a child suffers from BPD, not only is the child unhappy and unhealthy, but often, so is everyone who loves them. This mental illness can severely affect everyone, creating drama and heartbreak, while also piling on the guilt and anxiety. The good news is that there are answers to these problems, and we are here to offer you the support and encouragement to help you find them. You'll see that there are things that can be done to stop making things worse and begin to make them better. A great place to start is with this set of resources:
What can a parent do? We look forward to seeing you on the
Parenting a Son or Daughter Suffering from BPD board and hope you join us in learning how to understand and communicate with our children better
I look forward to seeing your future posts and hope to see you on the parents board.