Looking at the satellite map, I see now that she actually spent a fourth night in Ecuador about 8 miles south of the border with Colombia.
Although the images on Google Earth are not clear, it appears that she spent the night in the small town of San Lorenzo. No roads here so I assume access is via boat only. There are many pictures available on GE.
Broad tidal estuary. Mangroves. Rain.
I would bet money that she roosted on their only cell tower.