When Sexton was stopped, she had her two children, ages 6 and 4, in the back seat of her vehicle.
Police say her breath smelled of an alcoholic beverage, her speech was slurred and she failed several field sobriety tests.
She reportedly told officers she had consumed brandy about one and a half hours earlier.
After her arrest, Sexton submitted to a breath test, where the results were a blood alcohol level of .11.
She is charged with driving while intoxicated, two counts of endangering the welfare of a child and speeding. Child Protective Services was notified.
"A new state law that will go into effect on December 18, 2009 drastically increases the penalty for any person who drives intoxicated with a child passenger," Sheriff Vincent DeMarco said. "Sexton's arrest emphasizes the necessity for this much-needed legislation."