By Nalo Hopkinson.
Great science fiction book that extrapolates from Caribbean culture; it’s all in a dialect. In the future planet, Toussaint, everyone has a ‘nanny’ AI in their ear that helps them but also helps keep the peace. It’s a utopia future, with no manual labor and crazy bio-design stuff. Instead of a death penalty, they send people to the New Half-Way Tree, a parallel planet that doesn’t have any of the tech or AI of Toussaint.
The main character, Tan-Tan, her mother cheats on her father, so her father challenges the guy to a duel — instead of fighting fairly, he poisons the guy, which basically gets him sent to the New Half-Way Tree. He sneaks Tan-Tan along with him, which is a bit of a dick move but it turns out he’s really a monster and abuses her in the New Half-Way Tree.
As a quick summary, Tan-Tan kills Antonio and runs away (it’s eye for eye) and lives with these half-beast people in the forest. She becomes the Midnight Robber, doing good in the small colonies on the New Half-Way Tree. But she gets kicked out of half-beast people, too, because her mother-in-law finds their secret hideout trying to kill Tan-Tan for killing Antonio. Eventually Tan-Tan has a face-off with the mother-in-law and makes some peace. Then she has her child, Antonio’s child, and it turns out the nanny AI was able to make its way into the kid. It ends with Tan-Tan giving birth.