Unhappy woman's against temporary home provided by man (12)
I believe the answer is:
discontented
'unhappy' is the definition.
('discontented' is associated in meaning with 'unhappy')
'woman's against temporary home provided by man' is the wordplay.
'woman's' becomes 'dis' (Di is short for Diana).
'against' becomes 'con' (I've seen this before**).
'temporary home' becomes 'tent' (I've seen this in other clues).
'provided by' means one lot of letters go next to another.
'man' becomes 'ed'.
'dis'+'con'+'tent'+'ed'='DISCONTENTED'
(Another definition for discontented that I've seen is " Restless and unhappy".)