So, a little less than one a day? That seems eminently doable -- I read more than that in my teens, considerably more sometimes, for years at a time. (Of course I had no internet to distract me: my teens were from about 1977 to 1986.)

I have read the Lord of the Rings trilogy 5 times, Kim Stnaley Robinson's Mars trilogy 6 times, and the entire Frank Herbert _Dune_ series twice. In my early teens, if under time pressure, several times I read about half a dozen novels in an afternoon.

For a retired professional? Sure. I'd be surprised if she couldn't.

Around 1997-1998, I was freelance, not working a lot, and lived with a judge of the Arthur C Clarke award. I read pretty much all the new SF published in the UK both years. A couple of hundred books a year, while working.

Might explain how she landed a role as Professor of classics at Cambridge, a fellow of Newnham College, Cambridge, and Royal Academy of Arts Professor of Ancient Literature.