It's been almost 35 years since this Brenda Martinez disappeared while walking to use a pay phone. She vanished just before Christmas in 1988, and her body was found just after the new year in a park just outside of Flint. Brenda's death would be ruled a homicide and her 6-year-old daughter Stephanie, was sent to live with relatives in Northern Michigan. Now, more than three decades later, she hasn't given up trying to figure out what happened to her mom. David Lyden and videographer Josh Monroe spoke with Brenda’s daughter for the latest episode of Unsolved.