Phoebe: In all the years we've been grandmother and granddaughter you've never lied.
Frances: All right, that is not your father. That's just a picture of a guy in a frame.
Phoebe: Oh, God.
Frances: It was your mother's idea. She didn't want you to know your real father because it hurt her so much when he left. I didn't want to go along with it. But then, well, she died and it was harder to argue with her. Not impossible, but harder.