Tl;dr: Last Woman Standing is a furiously angry novel. In fact, its fury overwhelms the plot, but it certainly does make you think..
Last Woman Standing confronts not just the magnitude of harassment women face, but also the odd and tangled place women who refuse to be silent find themselves in.
In making the main character, Dana, a comedian, you might think this will be a thriller with dark humor.
It's not--which I think is the point--although I think it will displease some readers. Comedians often mine humor from dark places and Dana, who by the end has harnessed her rage into an up and coming career, has found that she's most successful when becoming "Betty," a woman who furiously strides through life, destroying anyone and anything that she comes across. And that--furious rage--is the heart of Last Woman Standing.
It starts in a familiar place: Dana, having left Los Angeles to return to Texas after an estrangement from her best friend and writing partner, Jason, that still has her questioning what happened and what she did wrong (even as she knows that she's a victim, she's unable/unwilling to think about that)--meets Amanda after a difficult set.
Amanda and Dana quickly become friends, and as Amanda reveals she's in Austin for revenge against the man who cost her entire career because of an unsuccessful sexual harassment suit (she also has an abusive ex), Dana finds herself drawn into Amanda's plans--first, they benefit her, then she helps Amanda, and then she starts to wonder exactly how far Amanda is willing to go for revenge--and more interestingly, how easy it is for her to be part of it, and how powerful it makes her feel to hurt men who've intimidated/harassed/assaulted women.
And that frightens Dana, just as Amanda reveals her ultimate target and frightens Dana even more.
Is Amanda crazy? Is Dana in danger? Who is she in danger from? Can she save herself?
Sort of, very much, the ultimate villian is (sadly) very obvious, and kind of.
It's that last question and answer that propels the story, unleashing a ferocity that consumes everything and produces a different Dana. One who is sharper, stronger, but so tired by what she sees that anger is all she's got to keep her going.
By the end, Amanda, who is so consumed by her plans for revenge that it carries a very heavy toll, is ultimately the most sympathetic character. Why? Dana herself puts it best:
"I needed her to tell the truth once more in court, where a dead woman was easier to believe than a live one every time."
While the plot of Last Woman Standing can't hold up to what it's saying, Ms. Gentry has created two very memorable characters in Dana and Amanda. The abuses each woman has suffered, and the way they both change from it--in Amanda's case, to be eaten alive by a system that can't/won't deal with a woman's rage out of anger at it or fear of it (I vote for both, but lean more towards fear)--and in Dana's case, to embrace the anger and channel the exhaustion that comes from realizing that being a woman means always facing:
"...the endlessly reflected faces of abuse...Once you see that struggle, you can't unsee it. You can profit by it or get crushed by it, but you can't escape it."
Told you--furiously (and I would add gloriously) angry. 3.5 stars rounded up to 4.