Gideon the Ninth by Tamsyn Muir

Gideon is a badass swordswoman who must accompany her house necromancer to a meeting of the nine houses (planets) for sort of a magic jousting competition and hopefully get them both out of there alive. This is a space fantasy with more political backstabbing than House of Cards and a tough as nails rogue more charming and caustic than Han Solo and then there are the animated skeletons. Gideon has a soft side too but only for her talented necromancer Harrow. A wild ride that doesn't leave you much time to breathe before the next calamity strikes and this is only the beginning. Tamsyn Muir has created a hybrid between the magical fantasies and space battles with characters you like and wonderful wit that is sure to charm young adults and adults alike.