By Yelena Mandenberg A mum has been arrested after a drink she made for her son’s bully landed him in hospital, police say. Jennifer Lynn Rossi, 45, is said to have mixed lemon juice, vinegar, salt and Gatorade in a sports bottle on Tuesday and then told her son to give it to a classmate who had stolen his drink the day before, according to an arrest warrant affidavit seen by ABC News’ San Antonio affiliate KSAT. This occurred at Legacy Traditional School – Alamo Ranch, about 20 miles northwest of downtown San Antonio, Texas. “Upon arriving to the school, deputies learned that the sick child w…