Dealing with a Narcissistic mother

I have never had a good relationship with my mom. She was extremely abusive towards me as a child. She didn't have a good life. She was in foster care and raped by her foster father and foster brother. She went to prison for manslaughter when she killed someone while drinking and driving. However instead of healing she instead makes it her kids problem. My mom has been diagnosed with borderline personality disorder but honestly I think she has Narcissistic Personality Disorder. My brother passed away before Thanksgiving and we had to put together a funeral. My mom donated 2000 to my brother's funeral cost but then came back to say it was a loan and she wants it back. I told her I probably can't pay it back until tax time. She got really hurtful with me. Said bad things. Then she started blowing up my phone. I'm no angel in these texts. I do call her a cunt but this is after 39 years of emotional and physical abuse. I stopped talking to her when she brought up my son and having awful things happen to him to get her money back. My son barely turned 14 and she's saying this about him.

My mom called me today to "apologize" and blame everything on her BPD. Idec if it was. I don't care what mental illness you're struggling with. Saying shit like this is too far