When do parents learn... when they are old enough to leave it is time to celebrate not move back in with them! I told my 2 15 year olds that I couldn't wait for them to turn 18 and move out.
They told me to not get my hopes up because they were going to be living at home well passed their 18th birthdays! They were hinting at somewhere in their 30's... maybe!
Just kidding Jim... I hope your daughter is doing OK!