Which is why they should've jumped on her the moment she started trying to puke. They had a good 10 seconds or more to do so. Shooting her in the leg with his rocket knife also works.
Sure, there's a risk, but not as big as letting Chamot do whatever she wanted as they watched. Taking the initiative is basic in combat.
That scene reminded me of Disgaea and how Etna pawned a member of a sentai group before he transformed.