If you do decide that you might like to learn how to finish the quilt, start small with something like a Quilt for Kids kit. Contact them on line at Quilts for Kids and they will send you a precut kit. Then get a book at the library on how to "quilt" the top, batting, and backing together. Check at your nearest quilt shop. I'LL BET THEY CAN INTRODUCE YOU TO A NEW FRIEND WHO CAN TEACH YOU HOW TO FINISH A QUILT.
Please do not let your husbands's illness eat up your life. You can love him and care without shutting out the rest of the world. Let your friends help you through this difficult time and avoid depressing people.