Girl over in Latin America (5)
I believe the answer is:
anita
'girl' is the definition.
'over in latin america' is the wordplay.
'over' says the letters should be written in reverse.
'in' says the answer is hidden in the clue.
'atina' is hidden in the letters of 'latin america'.
'atina' reversed gives 'ANITA'.
(Other definitions for anita that I've seen before include "-- Brookner, English novelist" , "girl produced" , "- Loos (Gentlemen Prefer Blondes)" , "-- Loos, US writer" , "lady" .)