The videos, released by the U.S. show Good Morning America (GMA), show the teenager singing mostly original songs to the camera, and according to GMA the most recent video was released just one week before she escaped via a window and alerted authorities, who rescued her remaining siblings.
With song titles like "It's Over" and "Give Me One More Chance", the teen made fairly typical YouTube videos of herself singing in front of a closed bedroom door.
She used an alias on her YouTube account.
The most recent video on YouTube was posted a week before the teenager escaped the home by climbing through a window and alerted police.
One video shows the family's two dogs, dirt smeared on the walls, and clothes laying on the floor.More news: Broadcom Pledges 5G Investment to Win Qualcomm Deal Approval
The teen's Instagram account shows mostly selfies and also includes some photos of Justin Bieber. When authorities probed the residence they reported the home stunk of human waste.
David Allen and Louise Anna Turpin face life in prison after being charged with torture and animal abuse. The oldest sibling weighed only 82 pounds. Those who saw the children recalled them as thin, pallid and reserved.
They were arrested in January when Police raided their home in Perris, finding their 13 children living in abhorrent conditions.
David and Louise Turpin were each initially charged with 12 counts of torture, 12 counts of false imprisonment, seven counts of abuse of a dependent adult and six counts of child abuse. They have pleaded not guilty to multiple charges of child endangerment, abuse and torture. The couple allegedly shackled the children to furniture as punishment and kept them on a nocturnal schedule.
David Turpin, 57, and wife Louise, 49, are in custody as they wait for their next court date - 23 March.
The siblings have been taken into care but several people have reportedly come forward with offers to adopt them.