The daughter of thrash metal musician Dave Mustaine, she was raised in Fallbrook, California and currently resides in Nashville, Tennessee.
She began to practice singing in hopes of one day becoming a prominent figure in the world of musical theater and acting.
Mustaine was co-host of Animal Planet's TV show, Faithful Friends "Itty Bitty Buddy" segment with WWE wrestler Bill Goldberg's wife, Wanda.
Mustaine began performing at fairgrounds and small gigs and venues around San Diego County and in Chicago.
In 2013, she performed a cover of her father's band's song "A Tout le Monde" by Megadeth on Seattle's KING-TV and having a benefit concert for the Ward 57 Wounded Warrior Project to raise funds for wounded veterans and their families.