While I do see your problem, I personally set my harvester when I was a
sentinel to harvest kola,plants. So i could watch the fall of the plant
number in the room. Had you done that you would have noticed him
harvesting right away. Second oakstone does not fine that high or enemy
for the first offense. As you said it was your third time in 10 years.
So well its your own fault it led this far. Perhaps reviewing your own
harvesting is necessary.

Penned by my hand on the 1st of Daedalan, in the year 344 AF.