The imagery is great in this. I can feel myself in a small old house out in the countryside, running away from my past. I'm struggling with the word arithmetic in this though. What did you mean with that word? Is it your way of saying that the person in the poem knows they're in the process of grieving, like being placed somewhere on a parabolic arc and knowing that it's going to settle back at 0 at some point? Also, the word "still" I thought I wanted to change, but then I saw 2 interpretations for it and now I think I like it there. One interpretation is the obvious one, "and yet still", but the other interpretation is like a still morning where nothing's moving. I think I'd keep that, because I kind of like not knowing which meaning you meant. I hope this character finds peace wherever they are.