Please get a new doctor before poor treatment from this one drains your ability to search for and participate in better care. It's not your fault she probably doesn't have the skills or time and gave a poor, rude excuse rather than saying she can't help you.
I told my sleep doctor that I had had a sudden onset of extreme sleepiness while driving late, pulled over, and passed out. He was very concerned and ordered a maintenance of wakefulness sleep test that I have to pass to prove I can stay awake while treated. I have looked a little and found normal data, but not sure what pathological is. I am sure that I can stay awake longer that the <8 min that was a fail on the mslt, but not sure about the whole 40 minute trial.