Costello helped guide the women's team to a third-place finish at The Summit League Championship in her first season and a seventh-place finish at the 2010 league tournament in her second season at The Oaks Country Club in Tulsa, Okla.
A native of Wilbraham, Mass., Costello served as Director of Events and Programs at Golf House Tennessee prior to coming to OU.
She played her collegiate golf at Elon University in North Carolina. She graduated from Elon in 2004 and is married to head coach Brian Costello. They both reside in Rochester Hills, Mich. with their newborn daughter Ashley, born on Tuesday, Aug. 24.