She can take the Metro North commuter train from Stamford to Grand Central, uptown #6 subway one stop to 51st St., transfer to Queens-bound E subway to Sutphin Blvd./JFK and Airtrain from there to JFK, or take the NYAS bus from Grand Central to JFK. One-way fares: Metro North-$18 (peak), subways ($2.25), Airtrain ($5), NYAS bus ($15).
She can take the Metro North