Ex-friend turned mutual friends against me. How to handle it?

I had a big falling-out/misunderstanding with my housemate. I think both of us didn't behave very well tbh, and I admit I was rude/unreasonable at times as was she. But after our falling out, she's gone round everyone we know exaggerating what I said, telling them I'm a horrible person and trying to spin the story that I deliberately went after her, which I didn't. She's never in the wrong or partly in the wrong according to her, or takes accountability for her part in the falling-out.

A few of our mutual friends believe her I guess because they won't even hear my side of the story. They won't talk to me at all now. How should I deal with it?

Ex-friend turned mutual friends against me. How to handle it?
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