Marylyn is a native of Dallas, Texas and grew up swimming with the Dallas Mustangs and Parish Episcopal. She was part of four TAPPS state championship teams at Parish and won 8 individual state titles. Marylyn went on to swim at the University of Texas at Austin and was part of two Big-12 Championship teams. She was named to the All-Academic Big-12 first team, Big-12 Commissioner's Honor Roll, and the University of Texas Athletic Director's Honor Roll. Marylyn competed at the 2012 US Olympic Trials in the 100m Butterfly. She currently works in Dallas in the advertising/media industry and started coaching for DAM in 2016.