Tammy Linn (Rowen) Gassner, age 52, of Sullivan, Missouri passed away on Tuesday, May 29, 2018 in O’Fallon, MO. Tammy was born on July 15, 1965 to Donald C. Rowen and Nancy K. (Kruse) Rowen, in New Orleans, LA. Soon after Tammy was born, her parents decided to move back to ...