I'm sorry for your loss too. It sounds like y'all really loved her.
We recently (last Oct.) had to put down our Aussie terrier Charlie. We'd had him for 15 years, after getting him from the pound. He'd been as street dog for quite a while before that. Beautiful dog, but a royal pain in the ass! Stubborn, untrainable, spiteful, thieving, sneaky little b@st@rd! I spent most of the 15 years telling him and DW how happy I was going to be when he was finally gone. But I still cried off and on for days, and even now spend a lot of time remembering him, even though we still have 3 other dogs. They really find a way into your heart.
"Good judgment comes from experience. Experience comes from bad judgement." - Will Rogers
DW and I - FIREd at 50 (7/06), living off assets