Excessively sweet daughter gets material (5)
I believe the answer is:
tweed
'material' is the definition.
(tweed is a kind of material)
'excessively sweet daughter' is the wordplay.
'excessively sweet' becomes 'twee' (I've seen this before).
'daughter' becomes 'd'.
'twee'+'d'='TWEED'
'gets' is the link.
(Other definitions for tweed that I've seen before include "Thick woollen cloth - northern river" , "Thick woollen fabric from Scotland" , "Rough woollen cloth" , "River; rough cloth" , "rough stuff" .)