girls gone bad

we all know the story:

girl goes to college, given more freedom, maybe too much, she strts going off rails.

but how can you control this and stay within limits?

my cousin has just started college, and she is a stunning girl, recently ost a few stones and boosted her confidence. now lads are falling at her feet. and not in a good way.

we went to manchester on weekend and she was eyeing the boys up. in a restauarnt a guy followed my sis to toilet to try and get her to give my cousin his number. she told him to get lost of course.

her younger sister told us the cousin has a boyfriend at college, even though her family are thinking of getting her married to her cousin in pak.

her mum and dad have found out about her flirty ways and are trying to push her into religion, with it having the opposit effect.

im not sure wt to do. i want to teach her about religion, and stop her misbehaving, but how can i do it without making her switch off and sounding like im preaching?