She skidded to a stop between him and some man. She didn't necessarily give a damn about the people she was saving. She was tasked to neutralize the situation, and that's what the X-Men were doing. Or at least trying to do. Gambit's explosions certainly didn't help matters. That's why she put herself between him and the FOH guy.

She tipped her head slightly. "I'd say it's good to see you, Gambit, but you're doin' a lotta damage here." Marie gestured around them. That exploding card was certainly a good instance.