About to become weary, daughter went to bed (7)
I believe the answer is:
retired
'went to bed' is the definition.
('retire' can be a synonym of 'go to bed')
'about to become weary daughter' is the wordplay.
'about' becomes 're' (regarding).
'to become weary' becomes 'tire' (get tired).
'daughter' becomes 'd' (genealogical abbreviation).
're'+'tire'+'d'='RETIRED'
(Other definitions for retired that I've seen before include "Gave up job, relaxed on pension" , "out of office?" , "Pensioned off" , "Went to bed or gave up work" , "Left" .)