Hi BarbBMtAiry and welcome to bpdfamily
I'm sorry for what you're going through but glad you have found a community where many of us have been through similar experiences, and we can learn from each other. You will see from reading the posts here that you are far from alone.
Stepping out drama and chaos helps us reclaim our life, the tools and lessons here can help us make that happen. Can you share how dependent your DD is on you, how often do you care for your grandchildren? Has something recently happen that's brought you to this point?
What aspects of her behaviour do you find most difficult to deal with, you say she provokes a lot of anger in you and brings out the worst in you, you want to not reactive any longer is good, you don't have to react! Reacting makes things worse - see here
Don't react, Respond with S.E.T. - can also be found to the
of your screen.
Apologies for so many questions, I'm glad you found us.
WDx