<p>When you are living in someone else’s house it is a courtesy not to come banging in the door in the middle of the night. I am asked to be in at a reasonable hour as a college senior and it is not out of an effort to control me, but because I am expected to be courteous to the people who are letting me live in their home and eat their food for free.</p>
<p>My only advice, thinking from your daughter’s perspective-- as you know I am not a parent, is to make sure you are controlling the damage from here. Get your car back, tell her if she wants to be away from you then she can be, but (if this is what you want) tell her that she can come back whenever she is ready and leave it at that. Do your best to say this in the least patronizing way possible-- you know, not like WELL WHEN YOU NEED ME <em>wink wink</em> I’ll be waiting." What you do NOT want to have happen is have a big fight about her choice to strike out on her own and whether or not she is responsible enough to handle this by herself (sounds like a no, but bear with me), something goes awry with the boyfriend, and because of the way she blazed out of your life she is too proud to come back and ends up homeless rather than come home. You did nothing wrong the night that she left. You have the right to set rules for your own household. She reacted extremely immaturely, and it sounds like she’s got some issues to work out-- and like she has been taking her parents generosity for granted. She will wise up sooner or later and probably be embarrassed for behaving this way, and eventually she is probably going to need you and you don’t want her to feel like she can’t come back to your family. I have known more than one person my age to end up homeless after leaving home in such a way.</p>