First, so sorry for the loss of your mother. And welcome to the QB - where you're sure to find a wonderful exchange of ideas, inspiration and support!
As for your treasures, I'm no expert at vintage quilts and how to preserve them but I say bring those beautiful quilts out and enjoy them! Even if they're put on display vice actually used regularly. If nothing else, please put them on display here - would love to see pictures!
Welcome from the Northern Neck of Virginia
Christine