Something about the way he says it breaks through the haze and lets her see him, truly, properly. The way she's denied herself for an entire year. The way she'd convinced herself had been a lie.

"I just need to sleep."

The likelihood of her mind being quiet once he's gone, once she's lying there in the silence with nothing but the sound of her own thoughts, is entirely in question. Exhausted as she is from the Force healing and the overall emotional upheaval, she expects her thoughts to be louder. So maybe it's not a bad idea for him to stay a while. Just so she doesn't have to stare at the ceiling and try not to think.

"Could you... just until I'm asleep, could you stay?"