The plane depicted as landing in Peru is a Cessna 185a Skywagon with a Mexican registration (XB-OAL) The skywagon has a range of 830 miles. At its closest to Mexico, Peru is about 1500 miles away.
There Is no reason not to take an airliner to Peru. Maybe then she would take a smaller plane to fly locally. But why is there a Mexican cessna doing passenger flights in Peru?
This movie makes no sense.