Need advice

So a couple months ago some crazy lady try to shame me by posting on the community gp that i flip her off and she even called me rude and said i was driving fast (i did not cus i was trying to turn my car at a T-junktion) she post my car plate and even told the gp where i lived. The comment are so bad some of them said they want to break my fingers and some even said things like they see me with an old man multiples time(a fucking lie) anyways in so mad cus im the one who had to deal with this and she scootch free from any harm or even criticise from the community.