|It eats tiny particles of your flesh.|
For all of the this, the story is not yours. It is the narrator's. It is one of the best voices in a short story I have come across in some time. There's such loneliness and bitterness in the way she gives instructions, simultaneously bossy and needy, that her story is almost told entirely through tone. Of course the details help as well, and those details tell of a woman who is clearly nearing the end of her life. Oh, and the robot eats "the diseases out of [her] flesh."
It's certainly a difficult story to walk away from. The analogy, if that is what it is, seems to just hover there waiting to be grasped. I suspect there are many ways to interpret it. Loni said it was about the "slow progression toward death." That makes sense to me. I also think it could be someone haunted by the realization that she has not become the woman she set out to become. In my interpretation, the robot could represent that idealized self, now coming back to haunt and "consume" her.
It's a compelling story in any case.