Maddies body

Ok so here’s my theory, they have to get Maddie’s body (janet) back into the school. Once she’s in there I’m assuming they are going to bring up her past trauma and make her vulnerable. As soon as a tear sheds or something Maddie is going to swap into her own body. My only thing is, I believe Maddie is going to be very sick once back in. I think she will be in a coma. Because there is no way that head wound didn’t affect her body. Janets soul is what’s keeping Maddie’s body going. Once janet’s gone I think she will cross over because she finally relived her life.