A police interrogation video shows a high school freshman calmly demonstrating how she strangled her newborn son to death in September, WFTS reported.
Cassidy Goodson, 14, is charged with first-degree murder as an adult for allegedly killing the baby moments after she secretly gave birth in her parents' bathroom.
Florida prosecutors released a batch of evidence on Thursday, including the footage of Goodson using a Santa Claus doll to show how she squeezed the life out of her son before hiding him in a shoebox, ABC News reported.
"Its eyes weren’t open but I felt to see if it was breathing or not, and (it was breathing) so I put my hands around its throat to make it stop breathing," Goodson told investigators.
"I wanted it to stop breathing so I wouldn't get in trouble," she said, according to the Ledger.
It took about one minute for her child's breath to cease, Goodson said.
In addition to the premeditated murder charge, the Polk County Sheriff's office lists one count of aggravated child abuse. If convicted, Goodson could spend life in prison.
Her public defender declined to comment about the evidence to the Ledger.
In the video recorded in her mobile home in Bartow, Goodson explained that she feared disappointing her parents, so she concealed her pregnancy by wearing baggy clothing. She also showed her mother fake pregnancy tests with negative results to fool her.
Police said Goodson used scissors during labor to pry out the baby. Three days after Goodson gave birth, her mother called police to report that she'd found a dead newborn in a shoebox in her daughter's bedroom. A strange odor led her mother to investigate.
Detectives questioned Teresa Goodson about how she didn't know her daughter was expecting a child.
Upon questioning from detectives, Teresa Goodson said she thought her daughter was "just getting fat and gaining weight,"according to the Ledger. "Honestly, if I would have known, this would have never happened."