I really like this, even though it is so sad. You manage to pack such a lot of imagery in without ever being graphic. There's an atmosphere to all of it that I can't quite put my finger on, but I certainly get the sense of things being over, and vividness of life being gone.
Mercifully, it seems the character can't quite recall the final moments before this conversation, only the intention. Yet the entire conversation itself takes on the feel of a final, dying dream.
Really skilful writing. And good use of the prompt. The carnation represents so much, but is ultimately fragile. As are we all.
On a slightly lighter note, like Steven, I am frequently lost and usually enjoy it. A small thing, and one that made Steven very real, but you do that so well.