QUEBEC (CNN) - The woman wore a nurse's uniform when she walked into the maternity ward.
She left the hospital driving away in a red car with a sign that said "Baby on Board."
Police say there was a baby inside the Toyota Yaris the 21-year-old was driving Monday evening as she left the hospital in Trois-Rivières, Quebec.
But the little girl wasn't hers.
At the hospital, baby Victoria's parents were frantic.
Their child was only 16 hours old when she was abducted, mother Mélissa McMahon said in a Facebook post describing the ordeal.
"The worst case scenarios played out over and over in our heads," she wrote. "Unfortunately, the endings are not often happy, above all in this type of case."
But just a few hours after the baby went missing, authorities returned her to her parents.
Thanks to "four marvelous people," McMahon wrote, and "thanks to Facebook."
"It is the only reason that explains why Victoria is in my arms at this time," she said.