Doesn't seem that out of whack.
1709 / 5 weeks = 342 miles/week
110 miles round trip to the airport 3x/week doesn't seem unusual to me in this case.
Now, the sniffing dogs is another matter altogether.
The dogs were from the U.K....
Perhaps the smells of Portugal and the dogs there were exciting to them...
European “scents” are so much more interesting than in the U.K..
The dogs don’t know who was carrying the dead body, though. Nothing against the parents there. All we know is that someone removed the body, and we already knew that.
The dogs should hit strongly on the car if a body was in it for a few hundred miles.
How do they know the hair belongs to the missing girl? Hair comparison is not that exact.
An 88% DNA match, isn’t.