ABC 57 Investigates: Dellia Castile speaks out

ROCKVILLE, Ind. --- Terry Sturgis is serving a 140-year prison sentence for killing his son Tramelle.

Terry's mother, Dellia Castile is at Rockville Correctional Facility serving a 50-year sentence for not reporting the abuse of her three grandsons.

Police say she knew, but Castile says that's not true.

For the first time after turning down dozens of interview requests we asked her about the abuse, her grandkids beaten with sticks, poles, table legs, belts and burned with a hot iron.

We also asked why she didn't speak up.