Our thoughts are also with you. What a rough thing to go through at the holidays. We've been in a pre-holiday hospitalization emergency - it didn't involve cancelling a vacation, but did mean I had to move my (then 58 yr old) active mom permanently into a nursing facility 2 weeks before Christmas due to a massive stroke.
I would definitely call DVC and see what they can do for you. I bet you'll find they are willing to let you keep the points with proper documentation.
Be strong - there are a lot of things they can do to find hidden infections - and I hope she has a full recovery.