NEW YORK -- A New York nanny charged with murder in the stabbing deaths of two small children under her care has appeared in court for the first time.

Yoselyn Ortega was hospitalized for weeks with stab wounds police said were self-inflicted after the Oct. 25 killings. She was arraigned at the hospital in November but has since been released. She appeared in court Friday wearing glasses and her hair in braids.

Lawyers say psychiatric evaluations for Ortega are not complete, and they need more time to review medical records to determine whether she is fit for trial.

Authorities say Ortega stabbed 6-year-old Lucia Krim and her 2-year-old brother, Leo, while the children's mother was out with a third child.

The three were found in the bathroom of the Upper West Side apartment.

Earlier on HuffPost:

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  • FILE - In this Oct. 27, 2012 file photo, Photographs of the two children allegedly stabbed by their nanny are displayed alongside balloons and stuffed animals at memorial outside the apartment building were they lived in New York. Yoselyn Ortega, the nanny, has pleaded not guilty in the stabbing deaths of the two children. Ortega was arraigned Wednesday, Nov. 28, 2012 at a hospital where she has been treated for self-inflicted stab wounds. Six-year-old Lucia Krim and her 2-year-old brother, Leo, were killed Oct. 25 in their Upper West Side apartment. Their mother found them when she came home with the victims' 3-year-old sister. (AP Photo/Mary Altaffer)

  • Yoselyn Ortega

    Miladys Ortega shows a photograph of her sister, Yoselyn Ortega, front center, taken some time between 1985 and 1990, at her home in Santiago, Dominican Republic, Saturday, Oct. 27, 2012. Yoselyn Ortega, a 50-year-old naturalized U.S. citizen, is accused of stabbing to death two children in her care at a New York Upper West Side apartment on Thursday, Oct. 25, 2012. Yoselyn Ortega was in critical condition Friday with what police said were self-inflicted knife wounds, and investigators were unable to question her, in part because she was still breathing with the help of a tube. (AP Photo/Manuel Morel)

  • The building where Yoselyn Ortega lives is photographed, Friday, Oct. 26, 2012 in New York. Ortega, the nanny suspected of stabbing two young children to death, was in critical condition Friday with apparently self-inflicted injuries. The children's mother returned home Thursday evening to find two of her small children dead in a bathtub and Ortega, with self-inflicted stab wounds, lying near them, police said. (AP Photo/Mary Altaffer)

  • Reporters surround the apartment door of Yoselyn Ortega, the nanny suspected of killing two children in her care, Friday, Oct. 26, 2012 in New York. Ortega was in critical condition Friday with apparently self-inflicted injuries. The children's mother returned home Thursday evening to find two of her small children dead in a bathtub and Ortega, with self-inflicted stab wounds, lying near them, police said. (AP Photo/Mary Altaffer)

  • Miladys Ortega's home stands in the Los Alamos neighborhood of Santiago, Dominican Republic, Saturday, Oct. 27, 2012. Milady's sister, Yoselyn Ortega, is accused of stabbing to death two children from the Krim family in her care at a New York Upper West Side apartment on Thursday, Oct. 25, 2012. If there was tension between the nanny and the Krims, it didn't show on a Web journal kept by the children's mother. Marina Krim spoke lovingly in one entry about traveling to the Dominican Republic last February to stay for several days at the home of Ortega's sister. (AP Photo/Manuel Morel)