Star Rider on the Razor's Edge

Agent Toemeka Ganti, code-named Star Rider, lives on the edge.

Her latest spy mission is to overthrow General Bhandar, the despot of Jaipar, who’s being controlled by Samrat Condor, a mighty sorcerer and interplanetary conqueror. And Samrat Condor isn’t about to loosen his stranglehold on Jaipar.
Toemeka is only too aware of Condor: she remembers the time his space fleet destroyed her home planet, killing her family while she barely escaped with her life.
Toemeka must preserve her cover, despite secretly taking on many side operations that threaten to derail her primary mission. Her main work of creating a shield-destroying oscillator prototype is a key to winning the conflict. However her overbearing boss Commander Rochambeau disrupts her and pressures Toemeka daily with thinly veiled bullying tactics: either become his mistress or face certain death at the hands of Condor.
Michio Kimes, a handsome spiritual warrior training to battle sorcery, seriously complicates Toemeka’s mission. Her only hope of surviving these tremendous odds lies with her trusted Coalition partner Erling Fenian and their rogue team, who band together with the local underground resistance in the fight to free the people of Jaipar and restore the rightful heir to the throne.