A wealthy California woman who co-founded a burn center foundation in the Los Angeles area was sentenced to 15 years to life in prison Monday for the hit-and-run killings of two children while they were in a crosswalk more than three years ago.

Rebecca Grossman was speeding when she struck and killed Mark Iskander, 11, and his brother Jacob, 8, while they were in a crosswalk in the Los Angeles-area city of Westlake Village on Sept. 29, 2020.

“The loss of these two innocent lives has devastated their family and our community. Ms. Grossman’s blatant disregard for human life is a stark reminder of the grave consequences of irresponsible behavior behind the wheel,” Los Angeles County District Attorney George Gascón said in a statement.

A jury convicted Grossman in February on two counts of second-degree murder, two counts of vehicular manslaughter with gross negligence and one count of hit-and-run driving resulting in death.