Low, daughter's spirit (4)
I believe the answer is:
mood
'spirit' is the definition.
(thesaurus)
'low daughter's' is the wordplay.
'low' becomes 'moo' ('moo' can be a synonym of 'low').
'daughter' becomes 'd'.
'moo'+'d'='MOOD'
(Other definitions for mood that I've seen before include "melancholy" , "sullenness may be indicative" , "Bad feeling" , "An atmosphere of doom" , "at times appears very high" .)