I don't judge you at all for making this decision, and have empathy for you, as I know it probably wasn't easy to decide. By acknowledging that you are unable to give her the care she deserves, in itself, is a very loving thing to do.
I've been thinking about Lucy all day....she reminds me so much of Ebby, and her brother Babo. Our kitty Babo sounds a lot like Lucy. He loves all creatures and other kitties instantly. Ebby, on the other hand, doesn't seem to warm up to other cats, and I need to be really careful about any additional stress I cause her since her diabetes is still not regulated. And then there is the DH problem. He would think I lost my mind!
I did contact my sister in Lincoln, and she is sending the info to a friend of hers that volunteers at the no kill shelter, and has cared for sick animals. I am also going to casually mention this to my DH when he gets home, and see how he reacts. I don't think he will go for it though....again he'll think I'm crazy.
So, let me think about all of this, and I'll also touch base with friends in Omaha, and see if I can find anyone.