At age nine, Vega appeared in the children television show Barney & Friends. In 2009, she auditioned for the ninth season of American Idol, but was later cut in the Hollywood Week auditions. Since then, she has portrayed many roles in her career including in films So This Is Christmas, Betrayed at 17, Teeth and Blood. In 1994, she played herself on Psalty's Songs for Little Praisers the Bible series in volume 1-3.