I agree clinical failure is a death wish. When I was in school luckily I graduate last year yeey . Those that failed clinical was particularly due to been unsafe especially during medication administration ,bed high postion, rails down etc etc. However if she told you that you need improvement and she is willing to help you then go for it dont give up , only you know what she really told you. Do not dowside it . If she believes your unsafe I doubt she will pass you and if she does then the professor in the upcoming semester may fail you if they do not see improvements but as I am writing this I remember.
oops let's get down to reality Nursing instructors rarely failed students who have A's in theory unless is something serious. I saw so many students that if It was me I would failed but like everything nursing schools
have numbers to put out, money to collect.
becoming a good nurse is you responsibility, just apply yourself and work hard . Nursing schools teach the basics , theory , clinical but excellent nurses and made on the floor excellent nurses are those that applied themselves in clinical rotations when they were in school.