I have this friend that is boy crazy and im scared cause i dont want her to get hurt.?

Ok so me and this friend went down town and into a taxi, and these guys where pretty much filling her up and putting there hands where they dont need to be and i dont wnat her to get ganged or anything if she goes with the guys cause she was going to go the guys that where all on up her, and i want to scare her in a way where she knows its not all peaches 'n cream cause i mean they are drunk and 20+ and she is like 17 and i just want her to stop trying to go downtown and drive in the taxi cause i cant take any fines or anything if i lose this job. anyways me and my sister have a plan and we are thinking about sort of scaring her my sister wants to use a guy that is not her type at all and im like she wont fall for it to her it would just be some wired guy and im like when not use a guy that is her type that way she can fall for it. I dont want her to just thing all the guys down there are the best ever and i know from the way she is when she gets it she will become a hoe and i dont want that to happen. So what do you think? Should i scare her or let her become that.