Another thought on the ending.......
Spoiler...stop reading if you don't want to hear about the ending).
This is in response to the post about whether or not Edna gets the boy's cancer at the end of the movie......
There is a scene early in the movie where the old man at the gas station puts his hands on Edna's head and tells her to go out and make plenty of lemonade. During the end credits they show a still of this shot, again. Perhaps this is where Edna actually gets her healing powers, from the old man who fixes things, on the day that he touched her. Then, at the end of the movie, Edna passes on her healing powers to the boy.
When Edna left the old man at the gas station, he smiles in the same way that Edna smiles after hugging the little boy. Edna smiles as she leaves the old man and his dogs behind. In the end she is smiling as young boy and his new dog are leaving.