Published: May 22, 2013 11:29 AM EDT
Updated: May 22, 2013 12:46 PM EDT

COLLIER COUNTY, Fla.- A new report confirms a mother is at fault for the crash that took her life and the lives of her two young daughters on Alligator Alley.

In January, 33-year-old Cecelia Douglas crashed into the back of a delivery truck, lost control and crashed into a canal. Investigators say 4-year-old Madison and 3-year-old Rylee were in the backseat unbuckled.

Her husband, Nathan, also told troopers his wife would frequently drive at a high rate of speed, did not wear a seatbelt and was known to apply makeup while going to work.

The report goes on to say Cecelia Douglas' actions contributed to the direct cause of this crash, the death of herself and her two daughters.