into protective custody.
Carey's sisters said they want to know why she had to die. Valarie Carey, a retired New York City police officer who spoke outside her home in Brooklyn late Friday, said there was "no need for a gun to be used when there was no gunfire coming from the vehicle."
Attempts to reach police in Washington for comment early Saturday were unsuccessful. Officials previously said circumstances leading to the shooting remain under investigation. Police have said they're confident Carey's actions weren't an accident. Carey's neighbors in Stamford were shocked to learn the driver's identity and see her gleaming black Infiniti wrecked outside the Capitol in TV footage.
Erin Jackson, her next-door neighbor on the building's ground floor, said Carey doted on her daughter, Erica, often taking her on picnics. "She was pleasant," Jackson said. "She seemed very happy with her daughter, very proud of her daughter."
Carey's mother, Idella Carey, told ABC that she began suffering from postpartum depression after giving birth in August 2012 and was hospitalized but had no history of violence.
Experts say symptoms of postpartum depression include lack of interest in the baby; mood swings between sadness and irritability; scary thoughts of something bad happening to the baby; and, in severe cases, suicidal thoughts, but not delusions.
In contrast, a condition known as postpartum psychosis can come with hallucinations, paranoia and desires to hurt the child. But it is extremely rare and does not tend to last for a year, experts say.
"If it's just a case of postpartum depression, you usually don't see people hurting others or getting aggressive," said Dr. Ariela Frieder, a psychiatrist at New York's Montefiore Medical Center.
She said that some women who appear to have postpartum psychosis actually have a different mental illness, bipolar disorder.
Dr. Brian Evans, a periodontist in Hamden, an hour's drive northeast of Stamford, said Carey was fired from her job at his office about a year ago but wouldn't say why. He said Carey had been away from the job for a period after falling down a staircase and suffering a head injury and it was a few weeks after she