Marlin has more than 25 years of experience working with all levels from youth to college athletes. She prepped at Cedar Rapids Kennedy and played collegiately at Morningside, setting single season and career records for the Cougars and Chiefs.

Marlin became head coach at Mount Mercy in June 2013 after serving as associate head coach for the Mustangs since 2006. In 2015, she led Mount Mercy to its first 30-win season in more than 20 years and the first NAIA national tournament berth in school history.

During Coach Marlin's tenure, the Mustangs have qualified for the NAIA National Tournament, 5 of 7 Heart of America Conference tournaments.  During that time, the Mustangs have had 2 freshmen of the year, athletes were selected as all conference athetets 62 times and an athlete as AVCA All-Region twice.  The mustangs have had 1 All-American.