MIDTOWN, Manhattan (WABC) -- New details have been revealed about the criminal history the woman who allegedly stabbed a tourist from California in a Macy's bathroom as the victim was changing her 10-month-old daughter.

Kerri Aherne, 43, was ordered to be held without bail after appearing in court Friday night .

Authorities say the suspect was discharged from a Manhattan psychiatric ward the morning of the attack, where she had been for over a year.

The incident happened Thursday afternoon, just before 3 p.m. at the flagship store during the heart of the holiday shopping season.

Prosecutors said Aherne entered the Macy's bathroom on the 7th floor and stabbed the victim , causing the baby to fall from the changing table to the floor. The baby was not injured.

The victim managed to

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