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A young Oklahoma mother shot and killed an intruder to protect her 3-month-old baby on New Year's Eve, less than a week after the baby's father died of cancer. 

Sarah McKinley says that a week earlier a man named Justin Martin dropped by on the day of her husband's funeral, claiming that he was a neighbor who wanted to say hello. The 18-year-old Oklahoma City area woman did not let him into her home that day.

On New Year's Eve Martin returned with another man, Dustin Stewart, and this time was armed with a 12-inch hunting knife. The two soon began trying to break into McKinley's home.