What statement exactly were they writing? Maybe you were too impatient to get past and maybe they were blocking the road for your safety? There is a car in front of them so it shows they were keeping up with traffic, so that shows you wanted to go faster than the two in front of you....?
It's a very small engined car, the acceleration isn't good on these. Maybe she was also waiting to reach the long straight stretch of road so she could build up some speed to get past the tractor. It's easy to blame the other driver for your mistake of not giving her a chance to get past. It's not a race, you need to allow for other drivers.
The vehicle owner has been parked at our private car park for over 7 hours now (...and counting). Very rude & inconsiderate.