Mozzie my heart goes out to you, I too know exactly how you feel.
I sat with our 12 year old Border Collie and spoke quietly to her as she died at home after a last dash visit to the vet 3 years ago. Dug a big hole in the garden (and my heart). All while my husband was away with the army.
Makes me cry now just thinking about it. We can have a cry together. Take it easy.
Kerrie