Forty-five-year-old Floribert Nava of Wildwood faces 12 years in state prison with a plea deal she struck Thursday.
The Press of Atlantic City reports the teen's baby was adopted by a family.
Nava used a fake gun on March 22, 2013 and forced the teen to drive her from Wildwood to Philadelphia.
The victim crashed into a police car on the Ben Franklin Bridge to get the officer's attention.
That's when Nava was arrested.
As a native of Mexico who is not a U.S. citizen, Nava could face deportation.
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Information from: The Press of Atlantic City