She's lucky. In most countries, bulling through a police checkpoint is a quick ticket to a pistol-whipping at best, or more likely, the morgue. The fact that she wasn't shot or beaten bloody speaks highly of the restraint used by the officer, IMHO.
Never mind other countries, what do you think would happen to us if we resisted a police officer for any reason, much less hit him? We would be face down on the floor in handcuffs, that's what.