The reason for the increased sightings are as everyone has stated tied to many variables.Deer wanting to see if you are actually hunting with that light of a set up.Your selection of stands based on wind direction,although you probably did that last year,food availability this year versus last.
The real test of your scent control program is a deer's reaction when it goes directly down wind of your scent stream.It sounds like the mature doe got a real snoot full.Did you sweat when going in?Was there a swirling wind that drove your scent down?
You have got to be pleased with the increased sightings.Make sure you have tree's behind the animal you shoot,on the pass through your arrow may go on forever.You are shooting one pin out to how many yards?