My therapist said it is completely fine to limit interaction with toxic relatives to a basic minimum. Quick visits or quick phone calls and no interaction otherwise. If her behavior improves then increase your time wit her. As soon as she starts arguing say you need to leave and leave or hang up. If she asks why tell her why and leave. Unfriend on Facebook

You can't get her to understand and no need to bother.

She picks a fight only if you participate. She can't fight if you leave and not present

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