Can abuse in a relationship ever be explained by bringing out the worst in someone?

Like the after effects of how my ex girlfriend still live with me and haunt me. She would hit me call me names such as stupid motherfucker, bitch, nuisance. Many months after the relationship I needed to text her about some documents that she had for furniture that we had shared. But one thing that couldn’t leave my mind is what did I do to deserve that like my brain couldn’t process it I never called her names, I never hit her it was my dream to finally be in a relationship and I would do anything to make her feel special and loved. So after the documents I asked why why the names, why the physical abuse and she goes some people bring out the worst while others bring out the best.

Can abuse in a relationship ever be explained by bringing out the worst in someone?
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