Relatives making awful scene about one (6)
I believe the answer is:
nieces
'relatives' is the definition.
(niece is a kind of relative)
'awful scene about one' is the wordplay.
'awful' indicates anagramming the letters.
'about' indicates putting letters inside.
'one' becomes 'i' (Roman numeral).
'scene' with letters rearranged gives 'neces'.
'neces' enclosing 'i' is 'NIECES'.
'making' is the link.
(Other definitions for nieces that I've seen before include "Relatives of 27dn" , "Young female relatives" , "Scene I set up for relatives" , "Relations" , "They're related" .)