Nassau police said they arrested a Hampton Bays woman Saturday night in Old Westbury and charged her with driving while intoxicated with her 4-year-old daughter in the vehicle.

Jillian Bellows, 36, who gave Nassau County police a post office box for her address, was charged under Leandra’s Law with aggravated driving while intoxicated, endangering the welfare of a child, failing to stay in a single lane, driving across a roadway marking, using a portable electronic device and speeding.

There were no injuries.

According to a police report, Bellows was driving a 2016 Toyota Scion east on the Long Island Expressway shortly after 8:30 p.m. at Exit 39 in Old Westbury when officers saw her swerving and failing to stay in her lane.

Officers pulled Bellows over and found her to be intoxicated, with her daughter buckled in a rear car seat, the report said.

The child was released to a family member.

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Bellows’ case was continued until Aug. 31 at her arraignment Sunday in First District Court in Hempstead. Bellows did not post bail, which was listed as $1,000 cash or $2,000 bond, according to court records.

Under Leandra’s Law, drivers who are intoxicated or impaired by drugs with a child age 15 or younger in the vehicle can be charged with a felony.

The law is named for 11-year-old Leandra Rosado of Manhattan, who was killed in an October 2009 DWI crash in which the vehicle she was in, driven by the mother of a friend whose sleepover party she was attending, overturned on the Henry Hudson Parkway in Manhattan.

The driver, Carmen Huertas, was charged with vehicular manslaughter and later sentenced to 4 to 12 years in prison.