The conniving Christie aide ousted for orchestrating the George Washington Bridge traffic scheme that delayed ambulances and left schoolkids trapped on buses is a New Jersey soccer mom whose brother is an EMT.

Bridget Anne Kelly, 41 — fired Thursday by Christie for repeatedly lying about her political payback plan — was described by neighbors as a “typical suburban mom” who sends her four kids, ages 17, 14, 10 and 7, to Catholic schools.

“I am just shocked that she could be so petty and reckless,” a mom whose daughter attends the same school as some of Kelly’s brood told The Post.

Even more stunning, Kelly’s brother, Eamon Daul, is a longtime emergency responder who trains new EMTs, works as a firefighter and is the EMS supervisor at New Jersey’s St. Clare’s Health Care Systems, according to public records.

His sister’s September bridge stunt delayed responses to 911 calls, including one to the Fort Lee residence of a 91-year-old woman whom officials and family members said died before EMTs could reach her.

Another of Kelly’s brothers, state employee Liam Daul, was likely doing a slow burn Thursday at his $70,000-a-year trading gig in the investment unit of the New Jersey Treasury.

“Time for some traffic problems in Fort Lee,” Kelly wrote in her now infamous Aug. 13 e-mail that signaled the go-ahead for the massive, three-day lane closure plan that wrought havoc on the GWB.

Christie said Thursday he was “embarrassed and humiliated” by Kelly’s actions — and he isn’t the first man blindsided by the cutthroat blonde, sources said.

Her husband, Joe — a golf pro at the Mendham Golf & Tennis Club, where Christie and wife Mary Pat are members — was stunned when his wife of 16 years came home in 2011 and announced she wanted a divorce.

“The guy was a wreck. It was completely out of the blue,” a source said.

Records show Bridget Kelly filed for divorce in December 2011, citing irreconcilable differences. The divorce was granted in February 2012. She got their Ramsey home, and he moved to Upper Saddle River. They have joint custody of their two daughters and two sons.

Neither Joe nor Bridget Kelly could be reached Thursday.

Bridget Kelly’s spectacular flame-out ended a nearly two-decade Republican political career. After graduating Maryland’s Mount St. Mary’s University in 2004, she went to work as a legislative aide.

She jointed the Christie administration in 2010 as director of legislative relations and in April 2013 was tapped for her $140,000-a-year job as a deputy chief of staff.