Girl in dire necessity (5)
I believe the answer is:
irene
'girl' is the definition.
(I've seen this before)
'in dire necessity' is the wordplay.
'in' indicates the answer is hidden within the clue.
'IRENE' is hidden in the letters of 'dire necessity'.
(Other definitions for irene that I've seen before include "- - Handl, actress" , "US actress, -- Dunne" , "Greek goddess of peace (English name)" , "woman" , "Greek godess of peace" .)