I'm not sure specifically as I haven't read it. But generally, it could be about a woman who endures through various challenges and is the last one remaining in a particular situation, perhaps in a post - apocalyptic world, or after a series of events that eliminate others.
I'm not sure about the exact main theme of 'the last woman standing novel' without reading it. But it could potentially be about survival, given the title which might imply that the last woman is in a situation where she has to endure and overcome various challenges.
There are several ways to find reviews for 'the last woman standing novel'. One is to check out Amazon. Many customers leave reviews there which can help you understand if the story is worth reading. Another option is to visit your local library and ask the librarians if they know of any reviews or if they have read it themselves and can share their thoughts.