Female, unmarried or married, adding support (4)
I believe the answer is:
maid
'female' is the definition.
(maid is a kind of female)
'married adding support' is the wordplay.
'married' becomes 'm' (abbreviation, e.g. in genealogy).
'adding' is a charade indicator (letters next to each other).
'support' becomes 'aid' (to aid is to help or support).
'm'+'aid'='MAID'
'unmarried or' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for maid that I've seen before include "One in service" , "Serving girl" , "Young woman - servant" , "employee" , "daughter?" .)