I'm very sorry for your loss.
I would suggest contacting a local quilt guild.
Someone from the guild would probably help you go through the stuff, and could possibly organize a sale for guild members (maybe you offer to give the guild a % of the proceeds to incentivize its participation).
http://www.rivercityquilters.org/contact.html
(looks like they just had a quilt show this past weekend)
Contact the President.
If nothing else, they'll for sure take a bunch of fabric off your hands for making charity quilts
I don't know if there are other guilds in the area.
A local quilt shop would have that information.
If you were local to me, I'd gladly help you go through it (as would plenty of others).
I don't know if you'll be able to get anything set-up by the end of this month, not with the holidays, so you might have to place the fabric from the house into the storage lockers.
You might be surprised at how much $$$ is there.