I’ve been put under multiple times. When they decide its time for you to be knocked out, there is zero chance of you fighting it. They may ask for you to count down from 100 and you might get to ninety-nnnnn… Before time traveling and waking up in recovery.
You will have no time to have a bad experience. Zero. But you also have no time for a good experience. If you’re feeling really scared just try to come up with the funniest and most absurd thing to say to the anesthesiologist before they put you under. It’ll take your mind off things that you shouldn’t be worried about.
You don’t, unfortunately. Some life lessons people have to learn on their own. Say your peace and if she listens to you, awesome. If not, at least you tried.