Queen of Cups principally is the woman or wife who understands her man when it is being a person.
Otherwise, it is likely to very broadly refer to a woman who knows, because she is studying that funky Cup so intensely as a flood is rapidly developing right where she sits.
It also appears for a woman who is figuring out her man, or figuring out something else. She can be naive or she can be wise or she can be catching on.