Female lover over in Rabat, a Romanian (9)
I believe the answer is:
inamorata
'female lover' is the definition.
(term for a female lover)
'over in rabat a romanian' is the wordplay.
'over' says the letters should be written in reverse.
'in' indicates the answer is hidden within the clue.
'ataromani' is hidden within 'rabat a romanian'.
'ataromani' in reverse letter order is 'INAMORATA'.
(Other definitions for inamorata that I've seen before include "Sweetheart" , "Someone fancies her" , "A woman loved" , "loved one" , "Girlfriend" .)