The upside of being an adult is getting to make choices. You have a choice to engage someone who is a negative influence or not.
Your decision to have a life without her is yours and she doesn't get to countermand that decision because she feels bad.
It doesn't feel good to turn your back from your mother. It feels a lot worse to have her go for the jugular. It's a choice.
The only word of caution is that if she is ready to make amends or sincere apology, you may want that but don't fall prey to her manipulations. Leopards seldom change their spots. They just camoflage them to survive.
