[2] She played college basketball[3] and softball in the United States with the University of Arizona Wildcats.
[5] She also saw pre-season action in the WNBA, with the Los Angeles Sparks in 2000, the Charlotte Sting in 2001 and the Washington Mystics in 2003.
[1] In January 2006, Willis joined the Sundsvall DB of the Swedish Basketligan dam,[7] leading the club to the quarterfinal of the playoffs.
[12] Willis was a member of the Puerto Rican national team for six years,[1] and played at the 2003 Central American and Caribbean Games in El Salvador, and in 2004 in Guatemala.
In 2010, she attended officiating training camp run by NCAA referee Bob Scofield at Flowing Wells High School.