Sort of over a girl (6)
I believe the answer is:
maiden
This clue is a double definition.
'sort of over' is the first definition.
'a girl' is the second definition.
(maiden is a kind of girl)
(Other definitions for maiden that I've seen before include "Damsel" , "First ever public address" , "Unmarried girl of old" , "Miss" , "Spinster" .)