CHARLESTON, S.C. (WCIV) — A woman was arrested Monday after being accused of entering a school bus and threatening a juvenile student in downtown Charleston last week. Kytazia Ryeshia Watson, 29, was charged with interference with the operation of a school bus, according to online jail records. A member of Sanders-Clyde Elementary School's administration said Watson got on a school bus Wednesday, May 14 in the area of the Bridgeview Apartments on North Romney Street and threated a male juvenile student, according to a Charleston police report. "I'm going to beat your a** and wait for your mom to come,"...