The thieves made off with her laptop, wallet and $100 in cash, police said.
An NYPD detective saw the robbery in Crown Heights and arrested the 15-year-old.
The robbery happened on Monday in Crown Heights, police said.
Identity theft is plaguing the 71st Precinct, police say.
NYPD released video of a suspect beating a man in an elevator to take his chain.
Amidst phone-grab fears, cops in Brooklyn see a spike an old school crime — chain snatching.
Get our daily New York City news and alerts!
Thank you for signing up!
Would you like to sign up for additional newsletters?
Thank you for signing up for additional newsletters.