Neal goes quiet again, bracing slightly, trying to get himself in a position where the return of gravity won't make him turn an ankle or something. He understands the appeal in a general way, but not being able to comfortably control his own body makes him too anxious for the weightlessness to be soothing.

Maybe she's turning it on to leave, maybe she's turning it on because she doesn't want her safe state of being to be damaged by this, carry this shadow, maybe she just doesn't care.

Neal knows how wildly, catastrophically untrue that last thought is, and it gets him to at least take a breath.