Tag Along. Heidi Sees, #2

Heidi Crolley can see ghosts. She even has one living with her-in a manner of speaking. She met teenage ghost Doris on her first trip home in nine years. Now she and Doris are headed back for July the 4th. It's supposed to be a vacation, but Doris doesn't want to go-and won't say why. And as soon as they arrive, Heidi's mother insists she helps a friend haunted by the ghost of a dead husband. Her mother-finally-believes Heidi about the ghosts, but there are still lies between them, and her mother seems oblivious to the trauma she's asking Heidi to revisit.
Still, Heidi agrees to help-because her mother asked.