Ex-friend is telling people I know that "I'm amazed she hasn't been fired yet" behind my back and I don't know what to do about it. She isn't known to cause drama or speak Ill of people so I'm pretty sure everyone is on the edge of believing her and questioning my employability.
She doesn't know where I work nor what I do. She doesn't have any evidence to back up her opinion.
I'm known around the office as a competent and trust worthy employee, I don't know whether this will make it back to my employer but I thought it'd be safe to ask here:
What should I do to prepare for any of this?
Is this slander or defamation?
Should I go to HR and explain the situation to them?