Hansel's sister (6)
I believe the answer is:
gretel
'hansel's sister' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for gretel that I've seen before include "Sister of Hansel" , "Babes in the Wood girl" , "Desirable as a spouse" , "Fairy-tale character" , "German girl" .)