Woman in some marital content (4)
I believe the answer is:
rita
'woman' is the definition.
'some marital content' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'RITA' is hidden in the letters of 'marital content'.
'in' acts as a link.
(Other definitions for rita that I've seen before include "The Beatles' lovely girl" , "Educating - - , film" , "subject of education" , "-- Hayworth, US film actress" , "...Hayworth, ...Coolidge, ... ''Educating ...''" .)