Girl with capacity to contain anger about such mischief (9)
I believe the answer is:
diablerie
'mischief' is the definition.
(thesaurus)
'girl with capacity to contain anger about' is the wordplay.
'girl' becomes 'di'.
'with capacity' becomes 'able'.
'to contain' indicates putting letters inside.
'anger' becomes 'ire' (ire is intense rage).
'about' shows that the letters should be reversed in order.
'ire' written backwards gives 'eri'.
'di'+'able'='diable'
'diable' placed around 'eri' is 'DIABLERIE'.
'such' is the link.
(Other definitions for diablerie that I've seen before include "association with Satan" , "dark arts" .)