Ex-friend going round smearing my name?

What should I do? My ex best friend (who was jealous and mean the entire friendship) kept doing things behind my back, so I "dumped" her out of the blue and blocked her on everything without explanation. That was the best thing to do at the time.

Now, she is going round apparently telling people I am "mentally ill" and telling them I take medication for mental illness, basically smearing my name to people. I think it's her way of getting back at me or something. I do take medication for anxiety and depression, but I told her that in confidence so she is spreading my secrets. I haven't said anything about her to others, just that our friendship was toxic so I had to stop being friends with her. She is telling people I am "crazy" so not to believe me anyway.

What should I do about her smearing my name to people? Should I ignore it?

Ex-friend going round smearing my name?
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