A 15-year-old Bayonne girl was charged with aggravated assault and weapons offenses after she cut another girl with a knife during a fight, authorities said. The 15-year-old, whose name is being withheld because she is a minor, was taken into custody Monday after she was identified as the assailant in a Sept. 16 incident, Bayonne Capt. Eric Amato said. The victim told police that the two had gotten into a fight and during the altercation, the assailant grabbed a knife from her bag and slashed the victim’s leg, causing a laceration. The 15-year-old was also charged with possession of a weapon f…