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. As one of the men was going from door to door outside her home trying to gain entry, McKinley called 911 and grabbed her 12-gauge shotgun. McKinley told ABC News Oklahoma City affiliate KOCO that she quickly got her 12 gauge, went into her bedroom and got a pistol, put the bottle in the baby's mouth and called 911.