Reason to reform married woman (6)
I believe the answer is:
senora
'married woman' is the definition.
(Senora is an example)
'reason to reform' is the wordplay.
'to reform' is an anagram indicator (letters in a new form).
'reason' is an anagram of 'SENORA'.
(Other definitions for senora that I've seen before include "Foreign lady; reason (anag.)" , "Lady overseas" , "woman from Barcelona" , "Reason with a Spanish woman, probably married" , "Spanish title" .)