Here’s the book description for A Passage of Stars:
In the crackling first book of Kate Elliott’s Highroad trilogy, strong-spirited Lily Ransome leaves her home planet—and the life she’s always known—to rescue an abducted friend
Willful as well as physically brave, Lily Ransome is dissatisfied by the options available to her on Unruli: She can either join her family’s lucrative mining business or begin procreating. When Heredes, her beloved martial arts instructor, tutor, and father figure, is kidnapped by alien bounty hunters, Lily spurns the expectations of her home planet and ventures into space to find him. Befriending a persecuted minority class of humans called the Ridani, she becomes involved in an intergalactic rebellion and finds love in an unexpected place—as well as true strength within herself.