I'm sorry. That's a hard one to repair the damage (if at all). My girlfriend, and our roommate too, have had issues with our local art and music community along similar lines, and it has made it very hard for them to get the opportunities showcase or perform locally. When "harmless" gossip affects your ability to earn income, take care of yourself, meet your basic needs, etc., that is sh-tty, and unacceptable. I'm glad people did see the truth and who you are, but like you said, the damage was done.
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“There's only one rule that I know of, babies - God damn it, you've got to be kind.”― Kurt Vonnegut