Well, seeing her impact with a tree leads to one other result.

It makes him angry. Sure, he knows she can handle herself in a fight, but he still doesn't like seeing that. Especially with everything else he has to deal with right now, seeing a new (as of five seconds ago) teammate get body slammed isn't great for his temper.

He dodges under the swipes of the first alligator, zeroing in on the one that sent her flying. He crashes into its back and sends it staggering forward, giving an angry hiss and making its mouth gape wide open.

He's really, really hoping she has enough strength to get another shot off, while he wrestles with the thing.