Tyler began her coaching career at Cornell University and coached field hockey, lacrosse and bowling from 1969-72. She coached field hockey at the University of Maryland from 1974-87, winning the NCAA Championship in 1987. She coached lacrosse at the University of Maryland in 1974, and from 1979-90, winning the AIAW championship in 1981 and the NCAA Championship 1986. She holds the distinction as the only Division I coach to win NCAA national championships in two different sports. She reached the national championship nine times and was named national Coach of the Year in 1984 and 1986. She coached the North/South game in 1984, 1986 and 1990 and was the South region head coach in 1982 and 1983. She was a U.S. women's national team assistant coach from 1987-90, and the chair of the national coaching certification committee from 1986-89.
Tyler was the first chair of the National Hall of Fame Women's Committee, and served on that committee from 1990-99. She was the chair for the NCAA Lacrosse Committee from 1986-90. Tyler has been the Director of Athletics at the University of Maine since 1995. In 1995, she became the second woman ever elected to the University of Maryland Hall of Fame. She resides in Glenburn, Maine.