RIP Fremeit. She was lucky to have you as her owner/friend.
Very sorry for your loss Mick.
We had a close call with our 12 year old minpin a couple of weeks ago. He'd been under the weather for quite a while. Lot's of sore spots on his body, he wouldn't jump up on the furniture, and needed a lot of coaxing to climb any stairs.
We thought he was just getting old. My wife took him to the vet after he'd had several accidents in the house over the course of a weekend. It turned out that he is diabetic, and was in very bad shape.
The vet had to keep him for a few days, and Kristi and I had a decision to make. My only question for the vet involved what his quality of life would be. The vet couldn't answer that. All they could say was that it would be expensive initially. I told them I didn't care, I can always make more money. I can't make another Bruiser. We took the risk and I'm glad we did. He acts years younger and doesn't mind his insulin injections.
We did get a window in to what the world will be like without him, and we didn't like it. When his time comes and the pain starts we'll be taking that ride. We dread that day, but we're focusing on enjoying our second chance to show him all the love he's shown us. The little twerp was our first kid, my constant companion, and at one point he pretty much saved our marriage. It's amazing what a pet can be.
My condolences on your loss and all the best to you and yours Mick.