I read this story to get an idea of Isabella's writing as I had not heard of her. That seems quite surprising to me having seen the volume of her work, but there are a lot of sapphic authors about these days.
The story was quite good - nicely written with a few unexpected twists and turns. Or at least a repeated twist which made it unexpected.
Looking at the cover, I think, though I am not totally sure, that Isabella was writing this as 'erotica', but I think I would put it as a sort of 'tales of the unexpected' story with sex involved. Maybe that does qualify as erotica - I am unsure of the definition. Perhaps I should look it up!