I thought she was on the 13th floor that is usually skipped - the light went to 14 and then no light and then the door opened ( she was going down from the restaurant, I thought).

yeah, that was totally obvious. Most buildings usually have a 13 in the elevator, but call it the 14th floor.

Most buildings usually have a 13 in the elevator, but call it the 14th floor.

If they call the 13th floor the 14th... what do they call the 14th floor?

the 15th. and so on, and so on. They just skip it.

When I was little, my dad worked in a building like that. I always thought it was funny. I wonder if they do that in buildings built today?

So if someone gets in the elevator and you're standing in front of the buttons, and they ask you to push the button for the 17th floor, you're supposed to push the one labelled "18"? See, I can handle just not having a "13" button, but ... I don't think I can handle this. Good thing I don't have an office job in a skyscraper.

No, you just push the button with the number they ask for. If they're overthinking it that much, they can find a stairwell themselves.

There was a whole horror movie based in the premise of the 13th floor that you can only sometimes get to. It was not very good.

There was also the sci-fi movie The Thirteenth Floor, which I recall liking.

I learned on CSI that casino elevators have to take into account not only Western "bad" numbers (13), but also those of the Japanese and other cultures who are heavily represented in the Vegas tourist industry.

The trope has been around for quite a while: [link]