He fakes a silent sort of oof and resists the urge to take her hand when she drops it close to him. She's cradling Rey, that's all.

Still, if his fingers brush against hers while he's also cradling Rey, he's not going to call any attention to it. He's not going to move away either. "I'd have gotten used to it. It's surprising what one learns to sleep through."

Cassian is a very light sleeper, but it doesn't mean he can't separate the white noise from the dangerous noise.