At what point should you cut off contact with a family member?

Are there some of you out here who do not speak to a family member? Can you share why? I am at the point where I am here now. I am so sick of the relationship I have with this family member. She pretends to be my best friend, when in fact she is condescending and a hypocrite. I'm just not wanting to talk to her anymore.

At what point should you cut off contact with a family member?
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