Joan knows there are things he hadn't shared with her, as well as things he still hasn't shared, his father's suicide the most prominent example. But she doesn't think it's because he doesn't trust her. She thinks he just doesn't want to face those issues himself.

She hums as she returns the kiss, definitely noticing the increased sense of purpose. The hum turns into a quiet whimper as his hand slides between her legs, and her hips yearn upward, pressing herself needfully against that hand.