A sad day

Today, Shadow has crossed the rainbow bridge.  She'll be with Spark now.
She has been very poorly these last six months with a grade 4 heart murmur, fluid on her lungs, and poor circulation.  She was on 3 lots of pills, and the Last couple of times that she saw the vet, she had an injection as well.
When I took her last week, the vet said that she'd deteriorated vastly in four weeks.  Today she was put to sleep. She couldn't walk well when we got there, and she was shaking like crazy. I suspect that she knew that she wouldn't be coming home again.
My heart feels like it's broken into a thousand pieces.
I have to clear away her toys and beds, and just can't bring myself to do it.