Asking For My Daughter Who Is In College In VA.

Asking for my daughter who is in college in VA. I'm in HI. She just texted me that she can't sleep because her mouth keeps over watering. The research I came up with says she might be tired, stressed perhaps. She flew back to college on the 28th, partied for New Year's Eve, and is not in DC on a 3 day interview for a possible internship. What can she do to fall asleep, day 2 of the event begins in 5 hours.