Yoselyn Ortega, the nanny accused of stabbing two young children whom she cared for in New York City's Upper West Side, was said to have been a gregarious woman. Recently, however, her life began to unravel. Those close to her say she just "snapped."

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“She snapped,” Celia Ortega, the nanny’s sister, told the New York Post. “We don’t understand what happened to her mind.”

Yoselyn, who lately appeared sick, gaunt and nervous, was reportedly seeing a psychiatrist. “She lost a lot of weight. She looked very unhealthy. It looked like she was going through some problems,” Ruben Diaz, a man who lived near Ortega in Harlem, told the Post. “She had aged a lot — like seven years in a few months.” 

Read what problems Ortega was dealing with;