lol, good technique. more of an overhand strike or vertical slash than a straight thrust, which is what i would think to do spontaneously. though that could be interpreted as a knife stab by security and also be hard to see. her execution was right on target and makes for dramatic photos, so 10/10.
also, top tier quick, but calm and casual retreat in the video clip. walk away slow with your hands empty and arms down. some real Michael Corleone at the restaurant type shit. what a boss.