Dear Megan,
It’s always hard getting used to change. Think of some new ways to fall asleep—listen to soothing music or read a book (not one that’s filled with action) before you go to bed, or spend a little time talking quietly to your sister in her new room or yours before going to bed in your own room. In time, you’ll get used to falling asleep without your sister next to you. And try to focus on all the advantages you’ll have with a room you can arrange and decorate just the way you’d like.