According to police, the suspect's own 13-year-old daughter called police shortly after her mother drove off the road.
Susan Rogge, 46, of Mahopac faces a host of charges after the incident that happened on Stillwater Road, including five misdemeanor counts, each of reckless endangerment and endangering the welfare of a child, Carmel Police Chief Michael Johnson said.
When officers responded to the scene, they found Rogge's 2007 Hyundai facing the wrong way in the oncoming lane, police said.
Two of the teenage girls in the car fled into the woods before the officers arrived. They were later found and turned over to a relative who brought them home.
The father of the 13-year-old brought her and the two other teens home, police said. The children were attending the Mahopac Volunteer Fire Department 92nd annual fair. Alcohol is not served at the event.
Rogge was charged with driving while intoxicated and aggravated driving while intoxicated, both misdemeanors, police said.
The aggravated driving while intoxicated charge indicates that Rogge's blood-alcohol level was at least 0.18 percent, police said. The legal threshold for driving while intoxicated in New York is 0.08 percent.
Rogge is due in Carmel Town Court on Monday night.