You've experienced true love with a dog, and it's like nothing else! Anyone who hasn't just won't get it, and you really can't explain it.
I adopted Lexie at 5 1/2, and she'll be 10 in a month. Where does the time go?! I think about her passing, but never dwell on it, as it's inevitable. I don't have children, but if I did, I can't imagine loving them more than I do this dog. Just can't help it!
They are treasures, and the pain we feel when they pass is only a reflection of how much they were loved and loved us. Your Izzy has the sweetest face and 'old soul" eyes! Enjoy her!!