(Associated Press) A woman who was shot to death outside the U.S. Capitol after trying to ram her car through a White House barrier had been under the delusion the president was communicating with her, a federal law enforcement official said Friday.

The woman’s family said she had been suffering from postpartum depression with psychosis.

Miriam Carey’s killing at the hands of police Thursday was Washington’s second major spasm of deadly violence involving an apparently unstable person in 2 1/2 weeks.

Interviews with some of those who knew the Stamford resident suggested she was coming apart well before she loaded her 1-year-old daughter into the car for the 275-mile drive to Washington, D.C.

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