Dragon's Chosen Mate (Storm Dragons Book 3) by Riley Storm

When word reaches Winterspell that a powerful demon lord has escaped the Abyss, high-ranking witch Christine Sinnclare knows this is what she’s been waiting for. Not only will she join the team being formed to deal with the threat, but she intends to be its leader. She’s strong, powerful, and knows she has what it takes to handle the other witches. Yet when a surprise turn of events lands one of the smoking hot dragons in the midst of her team, everything’s shaken up. Dragon shifter Altair has never felt at peace. The war has left its mark on him, but not in any physical way. Beset by perceived failure, his mind is slowly turning against him. With symptoms growing worse by the day, he knows it’s only a matter of time before someone is killed because of him. Again. Seeking a way to redeem himself, he volunteers against orders to join the fight against the demon lord, placing himself under the command of a curvy, powerful witch. Christine thought that having a dragon on her team would make it stronger. Instead, he’s trying to do everything himself regardless of the cost to the team. If they’re going to succeed, she knows that finding out what’s driving Altair is paramount. But spending time with the dragon has her feeling emotions that she wasn’t expecting. The two of them will have to give in to their desires if they have any hope of defeating the demon lord. Can she finally get Altair to open up to her, or will his past ruin everything she’s working to build?