as the teacher or the admin or the cop i wouldn't have escalated the situation. the girl wasn't doing anything that necessitated her removal from class. i would've gotten over myself and worked through my frustration w/the girl so class could continue w/minimal distraction or interruption.

as the teacher i'd have continued w/class and disciplined her afterward - verbally and possibly in written form. as the admin i'd have directed the girl to come see me in my office after class. as the cop i'd have talked to the admin/teacher outside the classroom and declined to interfere.