I was writing a message to a friend. She was going to arrive to my country one of these days. I was about to ask:
Are you here yet?
But then I thought, "Is that a 'legal' question?" Judging from context.reverso.net it probably is. One can see there:
Are you finished yet?
But I don't think (judging from dictionaries) "yet" can ever mean "already." It's probably closer to "not already."
My conjecture here is that "are you here already?" is a neutral question. But if I use "yet" instead, it's like, "I've been waiting for you for a couple of days now. Haven't you arrived yet?" Meaning, "yet" makes it more emotional, conveys a feeling of longing or something.
To sum it up. Can I use "yet" in the above mentioned context? If so, what would it mean? If not, what is a better phrasing?