Daughter is to look for loss (13)
I believe the answer is:
disappearance
'for loss' is the definition.
(thesaurus)
'daughter is to look' is the wordplay.
'daughter' becomes 'dis' (I am not sure about this - if you are sure you should believe this answer much more).
'is to look' becomes 'appearance' (I have seen 'The look' mean 'appearance' so perhaps 'look' could also mean 'appearance').
'dis'+'appearance'='DISAPPEARANCE'
Can you help me to learn more?
(Other definitions for disappearance that I've seen before include "Exit (maybe into thin air)" , "Vanishing act" , "Departure from view" , "fading" , "Act of becoming invisible" .)