Our experience over the years has been hetero women enjoy erotic text stories (accompanied by a few artful photos).
Years ago we ran adult BBSes (before the web existed) with many straight female members, and although their participation was obviously less than male members, when they did download something from the files area, it was usually adult text stories.
When we launched
Scrunts Male BDSM Erotica back in 2000 - we had hoped it would appeal to a female demographic. We didn't specifically aim it at a female hetero market during production. But while there's been a few female subscribers over the years, they represent a very small percentage compared to gay males.