Lee's covered in blood. That's the first thing that Kara notices. She's slightly behind Molly, and she barely looks at him after that initial realization, a muscle twitching in her jaw. Eyes trained on the horizon, she's trying to watch for things coming, the gun in her hands held up and ready.

"You mobile?" What she means is Can you keep walking? If not, they'd figure it out - she's not frakking leaving him behind, but she trusts him to be honest, and while she's got no idea where all that blood's from, somewhere in the part of her brain that's actually doing anything but looking for hostiles, she's praying it's not from him.