Smile, I have a solution but it may not be one you care to use. There is an organization called:

The Best Friends Animal Santuary and its in Kanab, Utah. They have a no kill animal haven and take in all kinds of sick, stray animals, you name it they have it. They would probably take in your cat, no questions asked. Its the organization I work with. Their address is:
5001 Angel Canyon Road, Kanab, Utah 84741, the phone #is(435)644-2001 or fax (435)644-2078.
Email: editor@bestfriends.og
You and your husband could drive her up there and be assured she would have expert veterinary care and a loving home until she died, She'd live with other cats just like her, in a natural friendly setting. NO CAGES...They also have people all over the country working for them and there might be someone near you that would take her in. This is a way for you to have your home back to normal and know you've done the humane SAFEST thing for your trusting, loving pet.