Laura ~ I'm in tears thinking of Amy being in pain.

Cammie has arthritis and has minor pain. But, she's around 14 or so.
A snuggle safe really, really helps her. I nuke it and put it under a towel for her at night and she sleeps on it and seems to be a lot less stiff in the morning. Then I nuke it again, so she can sleep on it anytime during the day. It stays warm for 8 to 10 hours. It might help Amy on the cold days.

http://www.snugglesafe.ca/index.htm