I know this is a

very 'old' movie, but watching it again the other night made me really admire Melissa Gilbert's incredible performance.
Where was Laura Ingalls? Not here.
Most people have seen Sybil, so that can pave the way for this story with a twist.
But she and Patricia Kalember blew me away.
It is a very difficult tale to tell but they convincingly portrayed the confusion and distress that incest brings to a family that can no longer communicate.