Factual error: It is said Maggie can't breathe on her own after her injury. If this was the case she wouldn't be able to speak, since she can't push air out of her lungs to generate sound.
Factual error: Hilary Swank is driving to the new home she bought for her mother, which is supposed to be in Missouri. Why do we see palm trees on the side of the road?
Answer: No, the cause of conflict between Frankie and his daughter is never revealed - we only know that she returns his weekly letters, and it has been some time since they have had contact.