I think she just didn't want to deal with conflict on the phone or feel self-conscious in the middle of all the "fun" having to call the "family" since they are most likely all single and not in a situation like that at all.
zuzu,
That could very well be it (my D20 has expressed similar complaints when we'd get on her about not calling us), as she was not driving. Had she been, I fully suspect she would have at least called me from the car on her way home, if for no other reason than to try to diffuse the situation (we are both classic conflict avoiders -- yeah, I know -- big shocker there), but that still would have been very late -- probably 1:45 instead of 2:05.
I'm not going to ask her if she had a good time. I'm going to say "I don't mind you going out with your friends from time to time, but I'd appreciate a phone call next time if you're going to be that late. I was concerned." And leave it at that.
