My DD who is home from college has been keeping really late hours. I understand that sometimes she doesn't get off work until midnight and that she wants to see her friends and have a social life. But, it bothers me when she's out so late. I wake up and realize she's not home, and then I can't go back to sleep. So I toss and turn until she finally gets home. Last night it was about 5 a.m. when she came home. I know when she's away at college she keeps her own hours and I have no idea where she is or what she's doing so why should it be different when she's home? I tell myself I can trust her to not get in trouble. But I worry about drunks on the highway that late at night, and I lie there awake waiting for her to come home. I don't want to fight with her about this, but I'm going to give her a curfew, for my own peace of mind. What's a reasonable time for a 19 year old to be coming home?