Digging to China [Blu-ray]

In mid '60s New Hampshire, Mrs. Frankovitz has two daughters, Gwen and troubled 10-year-old Harriet. One day Harriet finds a playmate -- retarded Ricky Schroth. When Mrs. Frankovitz dies, Harriet has to take orders from Gwen. When she eventually learns that Gwen is her mother, Harriet tries to run away.