In Mexican spanish what does it mean if someone says "ella es la duena de mis quinientos"?

Question

I went out to lunch today with a Mexican friend of mine and he told the worker (who he knows from coming in frequently- at Chipolte) he said, referring to me, "la duena de mis quinientos." At least I think that's what he said. Something similar at least. Anybody up on Mexican lingo enough to know what that means? Gracias!

Answer 1

That is not "Mexican lingo", it is just Spanish. If what you heard is right, he was saying "she is the owner of my five-hundred". Im not sure what he would be referring to, although I am assuming it is money.

P.S. it should be "dueña".