The doctor murdered by her former fiancé at a South Side hospital Monday was a fun go-getter and talented physician, according to friends and relatives. Dr. Tamara O'Neal, 38, was one of three people gunned down at Mercy Hospital and Medical Center at 2525 S. Michigan Ave. about 3:30 p.m. Monday. The others were a Chicago police officer and a first-year pharmacy resident. Speaking from the family’s La Porte, Indiana, home on Tuesday, O’Neal’s relatives recalled a fun, loving and ambitious woman. “She wasn’t the type of person that was shy,” father Tom O’Neal said. “She was very open. She loved life.”