NEW BRITAIN (AP) — A Connecticut woman accused of killing her 15-year-old daughter and critically wounding her 7-year-old son in a shooting in their home in November pleaded not guilty Thursday to murder and attempted murder charges.

Naomi Bell, 44, entered the pleas during a brief hearing at New Britain Superior Court. She took part from a prison via videoconference. Her public defender, Michael Isko, declined to comment after the hearing.

Police allege Bell shot her two children at her home in Plymouth on the night of Nov. 13. Her husband and another child were not home at the time. What preceded the shooting isn't clear.

Bell's husband told police that she was hospitalized twice for depression and psychotic episodes since the coronavirus pandemic started, and he was worried she wasn't taking her medicine, according to a police report. He said his wife's mental health deteriorated during the pandemic, but he never thought she would harm the children, the report said.

Bell, who is detained on $2.5 million bail, had worked for many years as a scientific researcher and also had been employed as a substitute teacher in central Connecticut, another public defender said during a previous court hearing.

Her next court date is April 20.