correct decision. anyway you don't fail your test on one serious fault, she must have had another one.
when i failed my first test and my instructor took me through my test paper after and he said the the examiner marked what he considered to be a minor fault as a serious fault, which took my serious fault count up to two, so i failed. he said that basically he thought the examiner was probably not confident in my driving because if he was he probably wouldn't have marked it up and let me off that one. But as he was not confident he needed two serious faults to fail me, so basically he gave me another one for free

But fair play to the examiner, because i wasn't confident in my driving either! and to be honest i was totally crap in the test, i had loads of minor faults, and i wasn't ready

and the examiner seemed a nice fair bloke to me... I had the same examiner the 2nd time round and passed with flying colours
reading between the lines, i doubt this woman was as good as she thought, she probably didn't even see the bloke at the bus stop who she splashed and the examiner probably knew she was driving round with her eyes closed. he certainly wouldn't have failed her on one thing, and how would she like it if she got soaked.