I hope I am not being paranoid, but I am worried about this situation. She is staying at my place for 2 nights, over NYE in NYC. If she drinks and gets in trouble or gets sick, will I be accused of a crime because I "allowed a underage person to drink" or "gave her alcohol"? What should I tell her in order to be safe?Should I get her to sign some kind of document exempting me from any liability over her behaviour? She will be with a friend that is 21, also staying at my place. Should I tell her to sign something saying she will be responsible for the 20-year old?