Hi ms juanita
I am sorry you are in this unpleasant situation. What led to that explosive fight you had with your mother? Did you perhaps confront her about the way she treats you now that you realized she might have BPD?
It's quite hurtful that she now doesn't refer to you as her daughter anymore but just by your initials.
Your mother's history is very traumatic, it's horrible that her own father did this to her. Did your mother ever get any help for the trauma she has experienced? Has she perhaps ever been in therapy?
How is your relationship with your dad? Does he also believe your mother is disordered?
We have several communication techniques on this website that can be of great help communicating with someone with BPD. I've selected some resources and encourage you to look into them, also some information about boundaries:
Setting Boundaries and Setting LimitsExpress yourself: S.E.T. - Support, Empathy and TruthAssert yourself: D.E.A.R.M.A.N. techniqueI hope these resources can be of some help to you.
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