My mother has the combination of histrionic and borderline personality disorder ,help me !!!?

it is difficult to live with her , she explodes with all her hysteria , and i am the victim , she beats me up and uses dirty language , i cant stand up to her because i am 17 yet , i went to a psychologist alone , but she is asking me to get my mum , she wud never agree to it , i dunno wat to do , i am sick of all the drama that occurs daily in my life , how shud i convince her to come with me to the psychologist ? i told her that i had taken my dad and he is not well so to support him pls come with us , but she is still not convinced to come with us , wat d i do ?