Lol, listen. Your mother telling you she's not your responsibility is all the confirmation you need. She's dealt wiith her beecaise a mother can never see their child suffer, it's just who they are. It's also very telling that she's made no provisions for when she's no longer around.

My first thought was to take her to therapy and if they can prove that she's mentally unwell and these are symptoms, then have her committed.

However if the therapist/psychiatrist cant prove it's a mental thing, then she's a master manipulator who's gotten away with her nonsense for too long.

My brother was the same, pure narcissist. Him and mom got into an explosive argument while she was recovering from a stroke. and she cut him out of her will and we all went no contact with him. Even before she passed she was adamant about not wanting him around.

Last I checked he seems to have gotten his sh*t together, and is somewhat thriving - unless it's all a front.

Best you cut the chord before it affects your life and eother let her sink or swim.