Saved By the Alien Dragon by Stella Cassy

She’s as disposable as the next slave…

Inescapable violence and misery are part of life on the lousy rock that Pax slavers dumped her on. Natalie’s only hope for survival is to prove she’s irreplaceable to her owners. But when the planet comes under attack and her captors are killed, Natalie begins to dream of things she thought were impossible. Freedom. And the drakon commander who makes her burn.
He’s ready to show his commanders what he’s made of…
Dashel is the youngest co-commander in the Hielsrane fleet. He’s smart and ambitious, but struggling to shoulder the heavy expectations of his new position. When he finds Natalie, she burns with an inner strength as fiery as any drakon. Their bond is swift and hot, and with her at his side he can find his footing and his voice.
But his youth is working against him, with some in the fleet just waiting for him to make a mistake. And when everything comes to a head, his inexperience might lead his crew and his woman to ruin.