Pirates and Tyrants Series by Jemma Topaz

Melesina, a scion of an Imperial star system, finds that the assassination of her father didn't go at all as she planned. She is now politely fighting for her life in a court full of cunning nobles and wily spies.Meanwhile, her trans sister Nada is just having fun, most of it carnal; but her past resurfaces, and she must choose whether to return to face danger and doubt.Among the rest of the crew, hobbyist thief Taisiya also has difficulties: sharing her mind with a new headmate... moreMelesina, a scion of an Imperial star system, finds that the assassination of her father didn't go at all as she planned. She is now politely fighting for her life in a court full of cunning nobles and wily spies.Meanwhile, her trans sister Nada is just having fun, most of it carnal; but her past resurfaces, and she must choose whether to return to face danger and doubt.Among the rest of the crew, hobbyist thief Taisiya also has difficulties: sharing her mind with a new headmate. Can she work with the ruthless Imperial operative in her brain, or will she get betrayed again?A high-heat sapphic sci-fi adventure with lesbians, robots, and spaceships! less