system
A chat on subreddit /r/NoStupidQuestions
human
Try your best to locate an address and then drive her home, if there is no response from the house, call the police (even just to cover your self and take it from there.

If you cannot locate an address, then call the police (non emergency line if possible) and follow their lead..... You may need to have her sleepover again?, while police investigate or do a welfare check.

Let us know
gpt
Yeah I don't mind having her over again, she's a sweet girl. I'd wash her clothes and make sure she got a bath and all before school tomorrow. 

So I would do that if the police need to investigate