I am so saddened at this news and that I missed it when you first posted about your devastating loss.  I am glad her harness has gone to a sort of "relative" dog and agree this is somehow Jynx' gift to him.

I have known young and seemingly healthy dogs and cats who simply don't wake up from a dental cleaning - sometimes this just happens with all of us - humans, too.  My own vet talked to me not long ago about the terrible panic he went through when for the first time in his life, he needed to go under GA and he knew the odds weren't high that there would be a problem and yet he also knew it happens without warning.  You could not have known and it isn't a sure thing at all that timing or the progression of the disease had anything to do with her not making it through the surgery, so please, please be kind to yourself.  We all make the best decisions we can at any given time and it is not your fault the diagnosis was difficult and unclear.

Sending warm thoughts for your hearts - remember she had such a happy life with you.

Sweet dreams, dear, pretty little Jynx.