Cat began playing organized lacrosse in 6th grade. Along with lacrosse she is also passionate about field hockey and ice hockey, now continuing to coach both at Greenwich Country Day School. She grew up in Grosse Pointe, Michigan, until her freshman year, when she came out east to attend The Hotchkiss School. There she played varsity field hockey, ice hockey, and lacrosse, for all four seasons, captaining each in her senior year.
Following High School, Cat went on to play both field hockey and lacrosse for Middlebury College, also captaining both teams. She led her lacrosse team to 3 NCAA Final Four appearances (2012, 2013, and 2015), while also earning 2014 Second Team All-Region and 2015 Second Team All-American, First Team All-NESCAC, and First Team All-Region honors. Cat finished her career with 206 draw controls, while playing at all four field positions—attack, midfield, defense, and goalie