For the first time, we’re hearing from the toddler’s family at the center of the “shaken baby” case. The death penalty execution of Robert Roberson remains on hold as advocates and lawmakers fight for an acquittal in the 2002 death of two-year-old Nikki Curtis. Now, Nikki’s biological half-brother is breaking his silence – describing what his family has endured for the past twenty years. In Palestine, Texas, people go on about their daily lives of school, work, and play. However, Matthew Bowman tells NBC 5 he feels stuck, unable to move past what happened 20 years ago. “All the stuff that we’ve gotten out of the storage building that we put off five years ten years ago now, we’re having to dig through it,” said Bowman. He’s never left Palestine, even with all its painful memories. He’s the older brother of Nikki Curtis, the toddler at the center of what’s now known as the ‘shaken baby’ case. “It’s been very difficult. We’ve never stopped living this. It’s been something that’s been brought up since 2002 all the way until now,” Bowman said. “My family feels like it’s something they never could let go.” Death row inmate Robert Roberson was…