Woman in torment shows spirit (7)
I believe the answer is:
'spirit' is the definition.
(I know this)
'woman in torment' is the wordplay.
'woman' becomes 'she'.
'in' means one lot of letters goes inside another.
'torment' becomes 'bane' (I am not sure about this - if you are sure you should believe this answer much more).
'she' going within 'bane' is 'BANSHEE'.
'shows' is the link.
Can you help me to learn more?
(Other definitions for banshee that I've seen before include "Howler" , "Gaelic spirit" , "no one wishes to hear" , "Portent of death" , "Ominous wailing spirit" .)