Exactly keeping her from going to places like this is useless people are going to do what there going to do rather it's at a rave or in a car, house, etc;
So if there acting suspect in the first place fuck it, it's through keeping anyone under lock and key wont stop them you can't be around 24/7
LOL at her not wanting you there and your still asking the question.
I was the coal car last 1st & last time I participated in a Train. I remember waking up on the floor @ a homies & chick was still gettin ran through like 12 hrs later. I say she was 25-30 deep in her that night. At least I wasn't the caboose that night...LOL