And there it was yet again, the promise that he'd done her a favor. True enough that she might've been given to Viserys had she grown up a princess instead of an exile. But her life in exile had been pretty much that, been given to Viserys, growing up under his shadow. It hadn't been easy, and perhaps growing up with her father would have been all the worse, but she still didn't consider being in Viserys' grasp for most of her life being a favor.
"I did not accuse you of their murders. Yet you still speak of doing me a favour. Tell me then, was growing up in exile with only Viserys, my insane and volatile brother, much better? I was but a pawn to him to lay claim to an army. Though he never counted on me slipping out from under his thumb, slipping from his control." Daenerys had found her strength with the Dothraki, had found the courage to stand up for herself, and she had found her edge. She was still very naive to the world, but her heart had become slightly harder, harder now after being trapped within Dark's carnival. She wasn't exactly working against that hardness either. Why should she? When she returned to her world, she had a war to plan, a campaign to wage to return her to her throne.
Though when Jaime expressed curiosity for her plans to reclaim the Iron Throne, she couldn't help but laugh. "Why would I share strategies with anyone outside of my advisors? Even if we have no memory of this place once we are returned to our own world, I will not risk it." In that, at least, Daenerys was not naive. Even if Jaime wasn't the Kingslayer, she wouldn't have shared strategies for such a campaign with him. He didn't need to know. "Besides, Westeros is busy tearing itself apart. The Starks are coming from the north, the Baratheons are fighting each other." Even across the Narrow Sea they got word of the happenings in Westeros, in how civil war was raging and tearing the land apart. Daenerys saw an opportunity, that if everyone was busy fighting each other whoever would be left over would not have the strength they started the war with. And she still needed time to raise the rest of her army given many of the Dothraki had left her after Drogo's death.
"I think we can play at being civil quite fine." Daenerys was not amused by that smirk, but she could be civil when it was required of her. That did not mean that she didn't still hate Jaime Lannister because she did. That wasn't something that would go away.