Police arrested a 12-year-old girl on charges of disorderly conduct, accusing the youngster of bullying a female classmate to such an extent that the girl considered suicide. Stamford police Lieutenant Diedrich Hohn said administrators at the unidentified middle school tried to resolve the problem, but called police when the bullying intensified. The 13-year-old girl’s parents called police Sept. 20 to complain that their daughter was taunted and harassed, he said. Hohn would not give details of the harassment, except to say that the younger girl yelled at the other girl and pushed her. The 12-year-old was released into the custody of her parents, he said.