Taking Vengeance by M K Theodoratus
Once Mariah was a hero of the Rebellion that saved the Half-Elven from genocide. After decades of fighting with Linden, the ruler and a former lover, over his policies, she exchanges her sword of power for her healing kit,
determined to let Linden wallow in his mistakes.
When her daughter’s family is attacked by privateers, Mariah’s anger flares. She and her partner seek simple vengeance, but the privateers present a greater danger than they imagined. Mariah discovers she must find a way to
reconcile with Linden–if the Half-Elven are to survive.