"It's everybody's responsibility to make sure our children get to and from school safely, and when it doesn't happen, which it did not in this case, it's heartbreaking," Indiana State Police Sgt. Tony Slocum told WSBT. "I haven't seen troopers cry in a long time, but I saw that today."
Xzavier, Mason and Alivia's uncle, Elgin Ingle, told WNDU that his family is grappling with the magnitude of their loss.
“(My brother) didn’t lose one kid. He lost all of his kids,” Ingle said. “What do you tell your little brother? How do you tell your little brother it's going to get better? You can't."
He described his nephews to WRTV as "shy at first" but, "Once you got past the shyness, the two boys were a life spark. They were nonstop, happy, go-fast, jumpy boys."
He said Alivia was a go-getter and "the kindest child you'll ever meet."
"My two nephews and my niece were taken from me because somebody didn't pay attention," Ingle told WRTV. "How could you look away from the road? Everybody knows buses stop at this time of day."
Authorities charged Shepherd with three counts of reckless homicide and one count of passing a school bus with the stop arm extended, causing injury. She was booked into Fulton County Jail Tuesday.
Police continue to investigate.