After helping Sam recover from his injuries, why doesn't Sarah let him back in the cave?
Text: pg. 130 Para 7 - pg.131 Para. 3

She still sees him as a worthless human being and she thinks he might try to hurt her.  She also thinks that he is well enough to make it on his own.

Why did Sarah finally to Ridgeford?  What kind of journey would it be?
Text: pg. 134 Para. 3

She was running out of supplies. The journey would be hard because of the deep snow and cold weather.
Sarah is also traveling by foot.