ST. AMANT, LA (NBC33) — UPDATE: The toxicology drug screen from the State Police Crime Lab shows that Raelyn Encalade had Hydrocodone, Diazepam, Venlafaxine, and Norvenlafaxine in her blood at the time of the crash.

ORIGINAL STORY: The Ascension Parish District Attorney tells NBC33 News the woman who drove her car into a bayou, killing two her two young girls, may have been impaired. Ricky Babin says there is evidence that Raelyn Encalade had controlled dangerous substances in her system at the time of the crash.

Encalade was driving along Stringer Bridge Road in St. Amant on February 21, 2012 when she lost control of the car and careened into Black Bayou. Her daughters, Patience and Faith, were trapped inside the car and drowned.

Now, Babin says he and his team are in the process of gathering as much information as they can on this. He plans to fully investigate the crash and bring it before a grand jury.