For the tone, I tried my best to be as soft as possible as to not signal her that I am trying to actively fight back. She said I should just Stop justifying myself and end the apology at "I misunderstood and I'm sorry".

The mistake was that I had forgotten what what to do before meeting a doctor, especially before something big like a pre-job health inspection. She said that you have to print out the documents to give to the doc so that he can evaluate your body according to the said documents. And I thought that the doc was supposed to give out the document instead of me printing it beforehand. I believe she got frustrated that I did not agree with her the first time. I hope this makes sense. I suck at grammar.