Heavenly babe: novice grabs her (6)
I believe the answer is:
cherub
'heavenly babe' is the definition.
(I've seen this before)
'novice grabs her' is the wordplay.
'novice' becomes 'cub' (cub is a kind of novice).
'grabs' means one lot of letters goes inside another.
'cub' placed around 'her' is 'CHERUB'.
(Other definitions for cherub that I've seen before include "A heavenly baby" , "Angel shown as a winged child" , "Sweet little baby" , "innocent-looking child" , "Member of heavenly group" .)