Based on my experience, those books would be listed under "Fiction."

There just isn't a lot of true representation of step life out there, and especially not from a step parent's pov. Probably because if there were, a lot of people would avoid getting involved with people who have kids altogether, and that doesn't serve our child centric culture at all. 

Regarding the family court system, here in the US it's part of a capitalist society, so it's a "pay to play" system designed to keep money flowing to the people who make their living from it. It's also rife with gender bias, so BMs are seldom held accountable financially or for acting in bad faith. While there are some instances of dads getting a fair shake or coparenting successfully with their exes, we don't typically get them on this site.

Sorry to be a downer, but it's better to know the reality and risks than remain naive and get buffeted by the often ugly fallout from other people's failed relationships.

I don't know of any "fiction" books dealing with the topics of StepHell. I do know of several of informational / educational books that can help you better understand the issues we deal with and can educate you enough to help yourself in court. But if anything, the books gave me understanding and a better way to "deal."

StepMonster by Dr. Wednesday Martin. One of the chapters is very scientific and a bit hard to read but READ it. It gives some clarity to the mother/child relationship...even the dysfunctional ones. It was the first book I ever read that was in the StepMom's corner.

Dr. Amy J Baker is a great psychologist that works with Parental Alienation. CoParenting With A Toxic Ex is a great read. She has several other books on the subject.

That's all I got. And I agree with everything ExJulieMcCoy said.