How do you stand up to an adult bully?

This girl grace has been starting really bad rumors about me for years that I’m the town whore… here’s the kicker I now live in a city and have a happy relationship far away from my home town. This woman is a pseudo feminist and absolutely despised me?
How do you stand up to an adult bully?
How do you stand up to an adult bully?
How do you stand up to an adult bully?
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