Female in prison returned to cause divisions (5)
I believe the answer is:
rifts
'divisions' is the definition.
(rift can mean a division or dispute)
'female in prison returned' is the wordplay.
'female' becomes 'f' (abbreviation).
'in' is an insertion indicator.
'prison' becomes 'stir' (informal term for prison).
'returned' shows that the letters should be reversed in order.
'f' inserted into 'stir' is 'stfir'.
'stfir' backwards is 'RIFTS'.
'to cause' acts as a link.
(Other definitions for rifts that I've seen before include "Breaks, severances" , "Splits" , "Clefts in earth, or disagreements" , "Clefts or fissures." , "Deep divides" .)