It did not take long for Quincy to send a set of coordinates to Thea.
Quincy's phone had been taken away from her during the time they were held captive, so she had no idea where they were being held.
Upon their release, they were not restrained any longer and so she had the opportunity to observe her surroundings.
Thus, she knew the place they were held was near Terentville.
Judging by the speed at which the car traveled to Terentville airport, she could roughly guess the villa’s location.