(This is made of my hown head cannons/ info from the wiki so suck it up >:P)

Charlie came up a bonding exercise, basically where residents/staff members would bond with each other. They would each take turns with each other and take turns doing what they both liked/wanted to do, and it was your turn with Charlie. And it wasn't all that bad

Charlie: she was teaching you how to sing "Alright! So you don't want to sing from your chest or your lungs, you're going to want to use your diaphragm most Times. Wait- Do you know what that is?"