BILLINGS, Mont. -

A 55-year-old Billings woman who struck a plea agreement that dismissed what would have been her 13th DUI was given a three-year suspended sentence and warned by the judge that if she drives drunk and kills someone she "will spend some real time in prison."

The Billings Gazette reports Lori Ann Cole was sentenced Monday by District Judge G. Todd Baugh for felony criminal endangerment and driving without an interlock device.

Cole was charged in September 2011 after a motorist reported seeing a female driver weaving all over the road.

While Cole performed poorly on a field sobriety test, her blood-alcohol level was below the legal limit of 0.08 percent. She also was taking prescription medications.

Defense attorney Jeff Michael says the prosecution had problems with its case and the agreement was beneficial to both sides.