Brittany Ingle was accused of lunging and punching Alyssa Shepherd in December, after a judge sentenced Shepherd to four years in prison.
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Shepherd's attorney plans to appeal, claiming the courtroom scuffle was a crime.
Shepherd was convicted in October. In December she was sentenced to a total of 10 years: four years in prison, three years in home detention and three years of probation.
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Shepherd was charged with three felony counts of reckless homicide and one misdemeanor count of passing a school bus while its arm was extended, causing injury. She struck and killed 6-year-old twins Xzavier and Mason Ingle and their older sister, 9-year-old Alivia Stahl, in 2018 while they crossed the street to board their school bus. An 11-year-old boy was also injured.
The school bus had its lights on and caution arm extended.
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