Oh for goodness sake! That was not what she'd been going for when she'd gotten to her feet. And whatever logic was left in her head was screaming for her to pull away. She needed to get away from him and this whole situation. It was bad for her and bad for him and bad for the baby. Every time she gave in to him, he hurt her. Every time.
Then again, she'd Fallen because of him, and that wasn't all bad. The confliction just kept on going through her head.
And it didn't give her much of a chance to pull away. While wasting time considering whether or not she should be doing this, Anna wasn't pulling away. By the time she realized she wasn't pulling away, she was already responding. Her lips pressing back against his, her heart racing and the resulting rise in blood pressure causing Aiden to jump around.