Cashmere Robinson was taken by Samantha Cuevas on Wednesday afternoon, and police believe they could be in the Bronx.
Cashmere is 5 feet tall and weighs 100 pounds. She has brown eyes and black hair.
She was last seen wearing a burgundy shirt, jeans and Michael Kors boots.
The Stamford Advocate said she was reported missing from her West Side home by her guardian.
Police did not release a photo of the girl.
Anyone who may have seen Cashmere Robinson or Samantha Cuevas is asked to call Stamford Police at 203-977-4921.
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