I just spend a half hour reading all of your posts... I'm sitting here bawling my eyes out! I'm so sorry for your loss. I know how it feels to lose a cat suddenly. My husband and I used to have Checkers, a black and white kitty. He was only about 10 months old when he died. We still don't know why he died. It could be a number of different things. But the strange thing was... he was perfectly fine that morning when I went to work. I mean, NOTHING seemed wrong with him. He'd had all his shots, was cleared of any disease when he was tested a few months back, and was just a happy, sweet, loving kitty. That was my husband's favorite, by the way.
So I'm at work all day and all night (I worked a double shift), and we're not allowed to carry our cell phones with us (I work in a restaurant), so my hubby couldn't get a hold of me. He had come home that night around 6 and went to go pick him up and take him to bed later that night, and he was lying in the back room in a corner. He thought he was sleeping. He went to pet him and found that he was stiff. He had been dead for several hours.
When he finally got me on the phone, it was around 10, so he had to deal with that for a few hours by himself. I felt so bad! I was in shock about it. I was crying so hard on the way home... I couldn't even finish the drive. I called my parents and went over there and mom took me home while dad drove my car home. They helped us bury him and all that.
He looked fine though. There were no injuries, no swelling, nothing. To have him autopsied would have been so expensive and we couldn't have afforded it, so we just had to let him go in peace and know that he didn't suffer before he died. He looked so peaceful. It's like his heart just stopped all of a sudden. My husband and I both took it really hard. We still have our other kitties, Spock & Saki, and we love them unconditionally, but it's still hard. Every now and then we'll find a little white hair on a blanket or something, and know it could only belong to Checkers. It brings back all those memories of him.
I didn't intend to share this whole story with you, but hopefully now that I did, it will bring you a bit of comfort knowing you're not alone. It's hard to lose a kitty, especially one you've had for years. I lost my first kitty a few years ago. I'd had her since I was 9. She was 9 years old. One day she just didn't come home. I was very upset of course. So again, I know what you're dealing with.
Sorry for the long post! I hope everything turns out well for you, and remember, Sampson needs you right now more than ever. Much love, and don't cry too hard! We're rooting for you!