Daughter, rejecting most of pudding, got up (7)
I believe the answer is:
dressed
'got up' is the definition.
(dressing is a kind of getting up)
'daughter rejecting most of pudding' is the wordplay.
'daughter' becomes 'd'.
'rejecting' says the letters should be written in reverse (I've seen 'reject' mean this).
'most of' means to remove the last letter.
'pudding' becomes 'dessert' (I've seen this before).
'dessert' with its final letter removed is 'desser'.
'desser' reversed gives 'ressed'.
'd'+'ressed'='DRESSED'
(Other definitions for dressed that I've seen before include "Brought into line" , "in fancy packaging" , "Like crab served up" , "When you buy them crabs might be" , "with mayonnaise, say" .)