GRAND JUNCTION, Colo. (CBS4)- A mother charged in the deaths of her children has asked for a different attorney.

Heather Jensen has been charged with negligent homicide, false reporting and child abuse resulting in death in the deaths of her sons William, 2, and Tyler, 4.

The boys were found unconscious after their mother left them inside an SUV near the Powderhorn Ski Area in Nov. 2012. They died after overheating in the locked SUV.

Police said she abandoned them to have sex with a man in another vehicle.

Jensen will now receive a public defender in the case.

William Jensen and Tyler Jensen (credit: CBS)