Do you think i should let her do this?

it depends if she's mature enough to handle this sort of thing the drink, no but she may get it anyways from someone else. The hair yes, it will grow back out and it is her hair and date, now that depends if she's ready to handle this, is she ready, do you know the boys, can you trust her on a date? this one really depends on the girl. and the music she's already listening to it youtube, radio, you might as well say yes.