Shane kills the men who try to force them out of the valley.

... He didn't want to have to, but he did it, and it saved the family. Their son, he begged him to stay. [She considers the ending more somberly.] But Shane didn't think he could. He thought it was too late for him, that... he couldn't change what he was. What he's done.

"There's no living with a killing."

[So... then what does that mean for her?]