Alice Gladwell is half-human, half-zombie, a position from which she can control the zombie horde living in the forest near what used to be Delhi, but is now the Wonderland free state. China covets Wonderland, partly because it wants the people as forced laborers, and partly because Alice dealt them a serious defeat in the first book.
So they prepare a half-and-half of their own, code named "Red Queen," whose one passion is to kill Alice. The eeeevile Red Chinese Commissars have told her that Alice killed her brothers as they tried to surrender - which (of course) is not true.
China is softening the Wonderlanders up with gifts from their still-technologically-enabled country. Toys for the kids; food and clothing; working televisions (which show only old soap operas and Chinese propaganda). And, at the same time, "democratic" forces in Wonderland seek to displace Alice with an elected government.
And Alice's loyalists have made contact with the rebels fighting Chinese control in the Deadlands of America...
The story is more complex, and less "and then that happened, and then that happened" in its plotting, than _Alice in Deadland_.
Still no grossout horror; these are more political tales that use zombies as a backdrop and constant menace than straightforward zombie-apocalypse novels. I'll risk the third, which is a prequel, but I'm probably done after that. (There are like seven or eight of these things, and I don't want to hook myself on another ongoing-and-openended series...)