Well that's that. We all went over to mother in law's to have good-bye cupcakes and soda with difficult child. sister in law and her family were there too. I got all of difficult child's stuff packed, we all hugged good-bye, and we came home. They fly out first thing in the morning, tour the school tomorrow afternoon, enroll difficult child Weds, and fly back Thursday.
difficult child did some testing a little bit ago, and at the preliminary meeting for results (not totally done yet), the lady said that, at age 15, difficult child has the emotional maturity of a 9 year old. I say that's actually somewhat generous, as easy child 1 is 9 and WAY more mature than she is. She has a female cousin who is 7, and it's SO sad to see them together because if you could hear them interact without seeing them, you'd swear it was two 7-year-olds together.
I just hope to goodness that she takes this opportunity to make a better life for herself.