YOu takl with her parents FIRST SG... or she will go to tehm and tell them you are crazy and by then they likely won't believe you

And you don't have any hard evidence either...

I would tell her right now isn't a good time to talk and that you need time too..

You need more evidence on this creep... She will just deny it if you don't have anything hard and her parents will believe her first most likely...

There are tons of good samples on here SG...

YOu don't have to ask them to apply pressure if you don't think they will... But you SHOULD set the record straight with everyone exactly what she's been doing... If you think the audience member will help you ask them to...