Why does my girlfriend think it’s ok to treat me like shit when she has poor mental health?

Like her family even says she abuses me, some of my family has really started to dislike her because of this but me being patient and not wanting to give up on people keeps giving her a chance with treatment that she keeps delaying on. She thinking moving will fix her mental health

Why does my girlfriend think it’s ok to treat me like shit when she has poor mental health?
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