Welcome to the Forest!! My son is a current freshman at Wake and is also on the shy side. Wake assigns the kids to dorms and roommates. She will fill out a form with preferences and get matched. There is no way to request a specific dorm it is luck of the draw. Their are no dorms with a private bathroom for freshman unless maybe their is a medical need. I’m not sure what the chances are of getting a single since there aren’t as many? To be honest, I don’t know if I would recommend a single for someone who is quiet and might retreat to their room. My son got matched with a really nice kid. They have not become best friends but co-exist well and respect each other. I was a little concerned about my son meeting people but he has met so many nice people. Everyone is new and wants to make friends so they are all really friendly. If she does get a single I would recommend she leaves her door open which will invite other kids in to connect. I’m happy to answer any other questions you might have. Go Deacs!!