That is an awesome story about the cat that found you, then disappeared. I wish my story was as inspirational as yours.
I struggled with my decision for 4 days. I think I knew deep down the first day that Gizmo was hurt what the outcome was going to be; even with the worthless emergency vet's diagnosis. I didn't figure her worthless until the next day, or I would have gone to see a different emergency vet...money was not an object to me at that time . I was not ever one to take him to the vet if he had a cough...he was tough

I had also never had any health problems with him. For some reason, that Sunday, I decided he needed to go. I will never be able to explain it, I just knew he needed to go to the vet. Well the result was a lot of money out of my pocket, which is fine, but the diagnosis was **it. I even got some money back from them when it was said and done because I was so discusted with them and told them so. I would give every single penney I have to have Gizmo back, but I wanted them to share in some responsibility.
Anyway, my story about Gizmo "visiting". It was probably about 2 weeks after he died. I went to bed like normal, in my lonely house without him. I had a dream that we were at the vet's office that fateful Wednesday (the day I had to put him down) and our vet told me he would not make it. I told the vet that since he wasn't in pain anymore that I wanted to just wait a couple days and see what happened. If it wasn't going to hurt him then what was the harm in waiting to see? (please remember this is a dream) Well, in my dream he got better. He was 100% fine by the time we went back a couple days later.
As if I wasn't struggling enough with the decision I already had to make, my damn subconscious had to go and just make things a thousand times worse. As if I wasn't already second guessing myself and my decision for the well being of my baby, now I will always wonder even more. I wish I would have never had this dream.