ROCHESTER, Ind. (AP) — A Fulton County woman has entered a preliminary not guilty plea to charges that she struck and killed three children crossing a highway to board a school bus.

Alyssa Shepherd, 24, appeared on Thursday morning, Nov. 15, for her initial hearing before a Fulton County judge. She’s charged with three counts of reckless homicide.

Authorities say Shepherd struck four children with her pickup truck Oct. 30 as they crossed a two-lane state highway to board a school bus on State Road 25 near Rochester.

She told authorities she didn’t realize the bus facing in the opposite direction had stopped.

Six-year-old twin brothers Xzavier and Mason Ingle, and their 9-year-old sister, Alivia Stahl, were killed. An 11-year-old boy was severely injured in the crash.