The Daily Mail reports that the baby was Bouguet's fifth and was born prematurely.
Two hours after being issue a death certificate, Bouguet and her husband visited the morgue because they wanted to see their child one more time.
"That night, we went to the morgue. We wanted to take a photo of our daughter," Bouguet told Argentina's Clarin newspaper. "But when a worker opened the drawer, we heard a cry and she was alive."
The newborn has been named Luz Milagros, or "Miracle Light." She is still listed as being in critical condition but is said to be improving. The deputy provincial health minister announced that five medical professionals involved in the case have been suspended, pending further investigation.
"At the moment we have no explanation," hospital director Jose Luis Meirino told the paper. "The baby was attended to by obstetricians, gynecologists and a neonatologist. They all reached the same conclusion, that this girl was stillborn."