After graduating from Creighton, Warren remained in Omaha to be girls' basketball head coach at
Boys Town High School. In 1992, Warren became head basketball coach at the
Duchesne Academy of the Sacred Heart, a girls' Catholic school in Omaha. Two years later, Warren moved up to the collegiate ranks as an assistant coach at
Iowa State. From 1995 to 2001, Warren was an assistant coach at
Northern Iowa under Tony DiCecco. Warren then was an assistant at
Missouri from 2001 to 2004 under
Cindy Stein and at Creighton from 2004 to 2007 under
Jim Flanery. Warren led Northern Iowa to consecutive
MVC tournament titles in 2010 and 2011, both of which led to automatic qualification for the
NCAA tournament. Northern Iowa later became runner-up in the
2012 WBI and made the
WNIT in
2013 and
2016. On March 4, 2017, Warren became the all-time wins leader in Northern Iowa women's basketball history. She reached her 184th career win with a victory over Missouri State. On January 22, 2021, Warren recorded her 250th Northern Iowa career win with a victory over Indiana State. On February 17, 2024, Warren earned her 202nd MVC win. The come-from-behind victory over Murray State moved her into first place in conference wins all-time. On February 1, 2026, Warren recorded her 350th victory at UNI with a win over in-state rival Drake. ==USA Basketball==