Oh, that's just horrible!
I have some things to say to you:
1. Do you have any idea how Blitzen died? If it was sickness, you should check and make sure Donner didn't get it.
2. Is Donner already showing signs of loneliness and depression? If he is, become his new best friend.
3. I am so sorry!
I know all about loss. In my lifetime, I've lost 10 chickens, 2 dogs, 2 robins (yes, they were all babies and
yes, they were abandoned. I know because they were only hours old and they were on the ground), 1 cricket, countless caterpillars and cats, and 2 sisters.