I know how you feel. I am sooooo sorry for your loss. Reading that put tears in my eyes. We lost our dog Rosie on 5th December last year and it was the worst xmas we ever had. She was a collie-cross springer spaniel and was just so clever and loving. But the dreaded word cancer lead to a brain tumour and it was heart breaking, how do animals that just bring joy to us, deserve to get things like that, just isn't fair.
I too will never forget her and I feel your pain mate, it's like losing a VERY close member of your family and all I can say is, time is a great healer, but I know that is no consilation. Anyone who doesn't get upset by something like that just isn't human, or certainly doesnt deserve to be.
I don't believe in God, I can't after that happening but RIP Rosie and Finegan.