M.k. Eidem Serie Imperial 5 -

A growl rumbled through the obsidian chamber. Around them, the Imperial Guard tensed. No one spoke to the Conqueror of Grythos like that. No one lived.

“You should not be here, Kerensa.” His voice was gravel and thunder, yet he did not advance. “This is the Hall of Judgment. The accused do not leave.” m.k. eidem serie imperial 5

It seems you're asking about and her "Imperial" series , specifically book #5. A growl rumbled through the obsidian chamber

Kerensa lifted her chin, her small hands trembling but her voice steady. “Then sit on the throne, Emperor. Judge me. I came willingly.” m.k. eidem serie imperial 5

She was no longer accused.

Kerensa placed her palm over his chest, directly over the thundering twin hearts. “Then conquer me, my Emperor. But let my people live.”