At age 19, Harvick performed on a local radio show, where she was discovered by Don Light, who signed her to a publishing contract with Cal IV Entertainment. Her first cut as a songwriter was "'Til Nothing Comes Between Us", a Top 20 hit for John Michael Montgomery in 2002. Harvick signed to Lyric Street Records in 2004, working with producer Byron Gallimore. She was once married to singer Daryle Singletary, a native of Georgia, and she thereafter dated former country singer David Kersh, who appeared as a guest on several episodes of The Bad Girls Club.
On May 23, 2009 in Comanche, Texas, Harvick and Kersh married. They had a child and still maintain their residence in Comanche.