Woman has space to finish (5)
I believe the answer is:
sheen
'finish' is the definition.
(thesaurus)
'woman has space' is the wordplay.
'woman' becomes 'she' ().
'has' is a charade indicator (letters next to each other).
'space' becomes 'en' (in printing, a space as wide as a letter 'n').
'she'+'en'='SHEEN'
'to' acts as a link.
(Other definitions for sheen that I've seen before include "Surface gloss" , "Oil slick" , "splendid clothing" , "Sureface shine" , "Radiance" .)