When taking the nurse aide exam is the examiner suppose to interfere and talk while you do the skill?

I took the nurse aide exam i know i passed the written but i know horribly failed the clinical.When i was doing my skill the examiner will point out my mistakes and tell me right when I'm doing it , which got me annoyed and nervous and i started to forget what i was suppose to do. I know when you make a mistake I can say i made a mistake can i start all over and she said no but with the other girls that got tested she let them correct their mistakes ( so not fair!!) Then at the end she stopped me from doing my skill and didn't let me continue. Is the examiner suppose to do that?? And i might add that she wasn't really paying attention and had like an attitude towards me like she didn't want to be there. Was she in the wrong??