Besides donations.
If your daughter can help with managing/doing an etsy shop see
www.etsy.com/market/used_quilt_books
and see
www.etsy.com/market/used_crochet_books
Maybe sell the book together with some fabrics and/or some yarn as a packet might be more attractive for buyers.
Post your books titles in the for sale section on this forum, there might be some people here interested in buying a book. I hope your books find a good home.
Success with whatever you do.