BOISE (AP) — A preliminary hearing has been postponed for an Idaho man charged with second-degree murder after his 11-year-old daughter tried to walk 10 miles in the snow on Christmas Day and died.

Robert Aragon, 55, was scheduled to appear Wednesday at a preliminary hearing in 5th District Court in Shoshone. The hearing has been delayed to give the defense more time to prepare. A new hearing date has not been scheduled.

Aragon also faces a charge of felony injury to a child after his daughter, Sage, and her 12-year-old brother made the trek along a cold and snowy stretch of highway on Dec. 25. The children lived with Aragon in Jerome.

Aragon and his cousin were driving the kids to visit their mother when the car got caught in a snow drift. Prosecutors say Aragon let the children attempt to hike the rest of the way.

The boy survived. The girl was found almost buried in snow and died, likely of hypothermia.

Aragon's cousin, Kenneth Quintana, 29, also faces charges of second-degree murder and felony injury to a child.