Homebody in a nutshell.

home·bod·y /ˈhōmˌbädē/ noun North American- informal A person who likes to stay at home, especially one who is perceived as unadventurous. A primary example of a homebody would be Rain Flaherty, before the start of the story. In Fara Bryer's words: "You [Rain] had no friends. You didn't even want friends if it meant you couldn't wear a dress around the apartment. You barely talked to me either."