I am grateful to Aidan Tompkins for bringing this short story to my attention, but neither of us is really certain whether it should be on this list of works of mathematical fiction. Since it is available free online, perhaps you could take a look at it now and let me know whether you think it should!

Here are the aspects of the story that are definitely mathematical:

• Among the things the voice did for her was “unfurl the innards of a math proof”.
• The voice was clearest when numbers were in front of her and gave her answers to trig problems too quickly. (It showed where holes could be poked in arguments of her classmates at university. But, it’s not clear to me whether that is a reference to mathematics. It could poke holes in their arguments in philosophy or literature classes too.)
• It talks about expressing her life as an equation and searching for X.
• It mentioned that “bone-setting” is (at least according to some etymologies) the origin of the word “algebra”.
• When her father stops making sense, it is described as being “like a proof missing some of its connective tissues”.

The fact that she "hears voices" (well, "hears voice") and sees a psychiatrist about it might connect to the stereotype that links mathematicians and mental illness.

At the end of the story, her daughter brings in the idea of time travel and the Novikov Self-Consistency Principle, which is not mathematical itself even though discussions of time travel do sometimes involve math.

So, there you have it. Do you think this story is a work of mathematical fiction? I'm honestly not sure...