What do you call this behavior?

My aunt lies about EVERYTHING. My aunt likes lying about how much her family spoils her when she goes to visits them. She likes spreading lies about me and she's always making stuff up or talking about me behind my back and she always denies things when she's confronted. She asks people who are close to me about my business and who I'm dating and again when I confront she denies it or tells me why would she want to know about my business because I ain't shit. She always says things to get under my skin or to see me miserable.

What do you call this behavior?
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