I suppose you could tell her how to be safe and responsible while out with her friends and also not to lie about what she’s doing and where she’s going if she wants to keep going out, and that if she ever finds herself in a bad situation, no matter the circumstances or time of night, she can call you and you will come get her (my mom had this arrangement with me and my sisters and it was very wonderful of her to give us this fallback).
Since she’s presumably bound for college pretty soon, drill into her head all the usual safety rules, like no drinking and driving, don’t accept mixed drinks or pre-opened beers, etc. Also no cocaine. According to an ADHD friend who has tried cocaine, it is like Adderall on crack (heh), and generally, ADHD people should NOT do cocaine.
All in all, this seems more like a regular old teenager problem rather than an ADHD-specific problem. I mean, I was the goody two shoes in my family, and my non-ADHD sisters were the ones who stole from the liquor cabinet and went to the crazy parties.