I just finished the show and i have a couple of questions

Q1- At the end, when Sean told Dorothy the truth about her baby, and she remembered what had happened, Jericho turned back into a Doll. Does that mean Leanne Powers only works if someone believes in it?

Q2- Was Leanne the only person in the Church of the Lesser Saints who could revive people? Leanne died at the end. Who has that power now is it Juju?

Q3- Was it all in Leanne's head, a result of her abusive parents, and the Turner house was empty, because Dorothy took her own life after her kid died, Sean slit his throat with a kitchen knife, and Juju overdosed? Uncle George and Aunt Josephine are her guardians, who were just trying to take her back home.