Network effect part 2 by martha wells

I'm usually alone in my head, and that's where 90 plus percent of my problems are. When Murderbot's human associates (not friends, never friends) are captured and another not-friend from its past requires urgent assistance, Murderbot must choose between inertia and drastic action. Murderbot has been sent by Dr. Mensah on a research expedition that includes her daughter Amena, her brother-in-law Thiago, and Drs. Arada, Overse, and Ratthi. Their ship is set upon by a hostile transport vessel, which Murderbot and Amena are compelled to board as the others flee in an escape pod. As the transport moves into a nearby wormhole, Murderbot hunts the grey-skinned humanoids in control of the ship, isolates Amena and the human captives Ras and Eletra in a safe zone, and begins to realize that the transport is the same one once controlled by its robot pilot friend ART.