Brenna McCormack (Gymnastics Instructor). Brenna has taken six years of gymnastics and tumbling at Patti’s. She is enrolled in all honors and AP classes at Lake Central High School. Brenna loves to sing and plays the trumpet and piano. She has a twin sister named Brianna, and her older sister Teagan is also employed at Patti’s. She lives in Schererville with her dad, stepmom, and 4 siblings. Click here to watch Miss Brenna’s welcome video.