Mandy holds a Bachelor of Music in Musical Theatre Performance from Oklahoma City University and a Master of Arts from the University of Oklahoma. Her professional credits include Lyric Theatre of Oklahoma, Kansas City Starlight Theatre, Great Plains Theatre Festival, Casa Mañana, and the Main St. Theatre, where favorite roles have been Lucille in the World Premiere musical Grossingers with Gavin MacLeod, Madame in The Unsinkable Molly Brown with Cathy Rigby, Christmas Present in A Christmas Carol, Rosamund in The Robber Bridegroom, Vi Petty in Buddy, and the principle female in Swing!, and My Way. She has been a guest artist with the Oklahoma City Philharmonic and performs with the Philharmonic's POPS Chorale. She has worked as music director, accompanist, and vocal coach for Lyric Theatre's Thelma Gaylord Academy and the Sooner Theatre Studio. Her students perform regionally, in National tours, Off-Broadway and on Broadway.