Ontario G2 driving test....any tips?

IN ADVANCE I APOLOGISE FOR THE LENGTH OF THIS QUESTION! YOU WILL GET 10 POINTS IMMEDIATELY WITH THE BEST ANSWER AFTER THE HOUR! So in the past year, iv'e went to take my G2 driving test in my home city twice. Twice, I got the same driving examiner, a woman in her late 30's. She's the only examiner the local license place has so every time i go, it will be with her. The first time i took the test was in an old car, not that great of shocks and the signal lever stuck sometimes...But regardless, i passed the test in driving abillity but i failed in driver judgement for "personal right of way" I was at an intersection and a woman in another car was supposed to give me the right of way, and i took it but then she started to accellerate and the examiner yelled at me to stop...I stopped and safely got back into the flow of traffic. Apparently if the examiner has to command you to not do something illegal, it is an instant fail. The entire trip she was pretty rude so the experience really sucked and she seemed happy and said sarcastically "...you clearly did NOT pass today, and here's why" and she explained. I was her last test on a friday afternoon in heavy traffic and i could tell she just wanted to go home so she was irritated. So i went back last month to take the test again with her. I practiced a lot before hand and borrowed my folks 2011 honda civic..I figured a smoother more quiet ride would put her at ease a bit more. Test was the same route, i executed all maneuver's perfectly but when we came to the same intersection, i was more hesitant and when someone was allowing me the right of way, I yeilded because they were edging and looking as if they were going to go, so i didn't want to repeat what happened last time. They went and then i safely made the turn. The examiner was a bit more at ease but again it was an instant fail for impeding the flow of traffic and not using my personal right of way. I understood why i failed but i don't think it was justified because she explained before the test that if there was a situation where i have to make the choice to stop or go, to take make the decision i thought was safest and not take any chances. So i take the test again this friday afternoon with her again...iv'e paid to take this test 40 dollars each time. This is my 3rd time so i have paid $120 and if i fail this time, i will be upset lol. I know the route perfectly so i am going to go through it again and again to make sure. I'm beginning to think the ontario license place is just a business out to get my money. I mean legally they could keep finding reasons to fail me and taking my 40 dollars as many times as they want to make more money...so what should i do if she fails me again? Anyone have a simmilar experience? Any help on this subject would be greatly appreciated....Again sorry it's so long.