it rains in Miami
Llueve en japón.
Llueve. (It rains) Hace sol. (Its sunny)
Naci en Miami
That would be "Nací en Miami".
"en" means "in" or "on"
'en un' = 'in a'
en el = in/on the
The question is "Is she a student in a Miami school?" The response, therefore would be: "Yes, she is a student in a Miami school." or "No, she is not a student in a Miami school." The Spanish of those two responses are: "Sí, ella es alumna en una escuela de Miami." and "No, ella no es alumna en una escuela de Miami."
in
"Hablas en español" means "Do you speak in Spanish?" in English.
Contented en Spanish is: contentos.
"Vino en" can mean either "wine in" or "he (or she) came in," but it would not be the end of the sentence in Spanish.