[It's not often she gets the chance to physically overpower Clarke! Of course she's going to take advantage. When the other girl tries to snatch it back, Rita simply turns around to shield it from Clarke's grasping hands.]

It's the only time. Just because the ship defied all common sense doesn't mean you're not at risk of infection here.

[She sets the bag down and leans over it, absolutely upsetting whatever slim organization was even there in the first place as she rummages-]

You seriously have needles in here? Geez- [Alright, well, she'll be a bit careful. Let's see, a water bottle, some...antiseptic? Oh, there's a bottle of concentrated alcohol. And--gauze. That's probably all, right? Turning back to Clarke, she points at the ground.] Sit.