By Kayla BranchStaff writer kbranch@oklahoman.comCristina Pozadas had never worked closely with children, spent time as a welfare case manager or learned about how the foster care system works.But while scrolling through Instagram last fall, she was intrigued with an ad to become a Court Appointed Special Advocate in Oklahoma County.Advocates, known as CASAs, are volunteers assigned to legal cases to advocate for the best interests of children who have been removed from their homes because of abuse or neglect.Read more on NewsOK.com