Watching the fight with interest, she makes a game show of trying to get up and slumping back down to the floor, grimacing in pain and feeling her ribcage. She *could* go keep fighting... but she could feel the risk to herself, and decided quickly that that wasn't the right play.  This way, she could watch and get a better idea of these monsters' abilities, and also importantly get an idea for how badly she was outclassed by her erstwhile allies. If the monster won, it'd be weighed down by someone, and she could attack it then when it was less able to move around; if it lost, she was injured the whole time, and could put on the mask of someone who'd been out of the fight and humbled. Yes. She would wait.