Sorry, but nothing will be the same again.
When she comes back it will be a visit, it is part of life, celebrate you have a child you did your best to raise and she will be fine.
I painted my daughters room and made it a guest room.
I packed up what she left and each box wrote a note to her. So it didn’t matter when she opened the boxes, there would be a note to her about how much we loved and appreciated her.
When she came back to visit, it was very special and for the first time we became friends with our adult child.
You as a parent you will always worry, but be happy you have an adult child that is accomplished and be proud.
Oh, yea and for the first time since she was a baby you will get a good nights sleep. ;-)
Terrific idea.