Don't worry about it. I'm sure everything will be good again in no time. My dad went through a similar thing when I left for college 5 years ago. This about it this way, although your daughter may seem like she is all ready and excited to be away from home, maybe she isn't. It took me a whole week to get adjusted to being independant and on my own. Heck, after the first week at college, I was ready to come home and never go back. I did go home for the labor day weekend because nobody was going to be at school, but after that, I was fine. I think I even called my parents once that week. My roommates were constantly calling their parents. I'm sure everything will be fine for you and your family. Just believe.