During the recent trial in the Supreme Court at Manhattan, the mother of this victims Marina Krim told the court the way she had come house along with her third child, three-year-old Nessie, after Ortega failed to turn upward at Lulu's dancing course.
The children's father and Marina's husband, Kevin Krim, was returning home from a West Coast business trip when police reached him at John F. Kennedy International Airport to share the tragic news.
She settled her affairs by leaving her important documents for her sister and family heirlooms for her 17-year-old son - which prosecutors argued was proof she was of sound mind when she planned the acts of that day. "She's lying there in the bathtub, her eyes open. But I see Lulu and Leo living within all three of the kids every day".
Lucia was 6. Leo was 2.
Kevin also testified in heartbreaking detail about learning that two of his children were dead and seeing their bodies at the hospital.
Ortega's lawyers had failed to convince the jury she was not guilty by reason of insanity.
"There were blood curdling screams from a woman", Rima Starr, a neighbor, told the New York Times that night, adding that after hearing the screams she saw Marina in the building's lobby, with a towel over her head and Nessie, her surviving child, in her arms.
Ortega had pleaded not guilty on the grounds on the grounds of mental illness, but NY courts have a high bar for proving insanity, with jurors deciding she was aware of what she was doing.
"The defendant is an evil and utterly risky narcissist and a complete failure", Kevin Krim said.
Both parents spoke in court on Monday.
Ortega had been working for the family for almost two years when she brought the two siblings to the back bathroom of their Upper West Side apartment and stabbed them to death. Ortega, who's from the Dominican Republic, had been recommended by her sister, a nanny for another NY family, and her background and references were faked by her family. "We'll miss them all our lives".
"The defendant knows nothing of responsibility or remorse".
Krim had been at a swimming class with her 3-year-old daughter, Nessie Krim.
In this March 1, 2018 file image from video, Yoselyn Ortega, a trusted nanny to a well-to-do family, listens to court proceedings during the first day of her trial, in NY.
"I am very sorry that it happened, and I hope no one will have to go through what I did".
"Although many wish me all the worst, my life is in the hands of God".
Judge Carro was not moved. "Leo and Lulu will never live the lives that laid ahead of them, and now their remorseless killer will live the rest of her life in prison".
At Ortega's trial, Kevin Krim testified that when his plane landed in NY that night in October 2012, he was met by police, who escorted him to the hospital where the bodies of his dead children had been brought, along with his wife and surviving child. "They had this, like, sandy brown hair".
"My family and I, we create and built".