In my profession we have regular training/ support days and of my group there's a couple do people I've known for years since initial training. In the last session I overheard someone (who I thought was a good friend) telling an anecdotal story about something I did during training- something which a) I didn't do and b) makes me out to be a complete cow. In the context of the conversation (which I admit I was eavesdropping) she blatantly told the story to fit in the conversation but I'm really upset with her. Am I unreasonable to confront her? I'm upset other people 'know' stuff about me which isn't true and I feel betrayed. TBH if she knew I'd heard I reckon she'll be mortified and I don't really want to confront her just to upset her but leaving it is making me more upset and bitter.