My daughter is 14 almost 15.
That was supposed to be your granddaughter there, right? Just making sure we understand the situation correctly.
I'm sure you've tried this already, but have you thought about trying to reconcile with your daughter, even if it's only for the "greater good?" I don't mean apologizing for all the stuff she's blamed on you. Instead, if you focused on her emotional rollercoaster of feelings and showed sympathy there, it could go a long way in finding some sort of communication.
That's ultimately what I did with my BPD daughter...we never talked about the blame of the past. I just told her that I was sorry she's struggling and that i always did the best I could, and I never fully understood what she was going through emotionally.
It's a thought anyway.