She's trying to catch her breath, before she cleans off her blade and sheathes it. As far as injuries go, she's mostly just bruised, though a cut on her cheek is bleeding... not that Marie apparently notices. Instead, she finally relaxes--or as much as she can while she knows she's not really safe. After all, who knows when another group of monsters could appear?

Instead, she simply turns to her mysterious helper, giving a sheepish smile. "Thank you for your help. I almost certainly would have been in trouble had you not aided me."