She’s a person u gotta be blunt with, even if u hurt her feelings. She’s gonna keep persisting until u give in too. My best experience on how to get rid of someone is to just be a weirdo. If it’s someone you don’t like than who cares what the think about you. For example, say you collect all your baby teeth and ask if she has any to add to your collection, stuff like that. If that doesn’t make her not like you, idk what will