Root doesn't buy it, and she's relieved Shaw follows up with a real admission. She can't help until she knows what the issue is, but she's sensitive to the fact that Shaw probably doesn't want any sympathy.

Stumbling into the darkened overhang, Root gratefully sheds the pack she'd been carrying and lets it slump to the ground.

"Not sleeping good like you need someone to keep watch, or you need someone to hold you?"

This isn't flirtatious -- it's a matter-of-fact question she asks while crouching down to unload a tin bowl and some salvaged water she offers out for Bear.