Published: Jan 16, 2013 11:08 PM EST
Updated: Jan 17, 2013 12:04 AM EST

LEE COUNTY, Fla.- A Colorado woman was arrested in Lee County, accused in the deaths of her two sons who died just two months ago.
Investigators say they got overheated inside a car while their mother left them alone.

A warrant was out for Heather Holesapple-Jenen's arrest after her two children died of Hyperthermia back in November. Police say Holesapple-Jensen was with her two kids at the Powderhorn Ski Resort on November 27th letting them play in the snow.

Authorities say while there, she met with a man who she was cheating on her current boyfriend with. After her two boys played in the snow, Holesapple-Jensen says she put them in her Toyota 4-Runner alone with the heater on and the engine running.

Police say she then met her friend in his truck to smoke pot and have sex. Reports show her kids were in the 4-Runner alone for about 40 minutes.

When Holesapple-Jensen got back to the SUV, she said her 2-year old son William was not breathing and had no pulse and was pronounced dead at the scene. She also told police her four year old son Tyler was breathing but making a "gurgling" sound. Tyler was flown to the hospital and died 6 days later. A Colorado prosecutor says they filed the charges that the law allowed in the case.

"It's a horrible horrible tragedy. It was not an intentional killing. I filed the charges that I think were appropriate and we'll take it from there," said Mesa County District Attorney Pete Hautzinger.

Police estimate the temperature inside that car with the heat cranked g up as high as 120 degrees. Hesapple-Jensen is charged with two counts of child abuse resulting in death, two counts of criminally negligent homicide and one count of false reporting to authorities after she gave investigators different accounts of what happened that day.