Basically, the smaller girl is trying to stab/ slash the taller one. In the face, in the neck, in the body.
You have to switch to aggressiveness once something like this happens. It isn’t going to stop if you are swatting it away.
Consequences will have to be dealt with later – no matter what this leads to. But for the time being, one must preserve oneself immediately.
This is a rare example of needing to fight to preserve one’s self. One needs to defend one’s self.