This young lady of 15 years is Senorita Kamyla Ruiz who with an extremely strong and beautiful voice sang songs from a Linda Ronstadt CD entitled: "Las Canciones de Mis Padres" (The Songs of My Parents) ... songs so beautiful they have the ability to move one's soul and Kamyla's rendition ensured that happened.
A google search provided the following links where you can hear her sing additional songs from this album:
http://www.youtube.com/watch?v=R-ZE9gmVjPc
http://www.youtube.com/watch?v=dnOkhvo3zOQ