Need some advice

I need all 4 wisdom teeth out soon. They’re all impacted. 2 haven’t popped through. My regular dentist wants to do it. I asked her if I could get some laughing gas (or whatever it’s called) and she got annoyed and said she will need to order it cause they’re all empty. (Ok?? They should have that taken care of) She said I don’t need it. That made me feel weird. I asked for a Xanax script for my bad anxiety about it all. (Just for the morning of) She gave me a script for 5mg Valium instead.

Should I go find an oral surgeon instead?

Why did she have to act like I was rude for wanting to use the gas??