She may be relatively disposed to resist (6)
I believe the answer is:
sister
'she may be relatively' is the definition.
I can't judge whether this definition defines the answer.
'disposed to resist' is the wordplay.
'disposed' is an anagram indicator.
'resist' is an anagram of 'SISTER'.
Can you help me to learn more?
(Other definitions for sister that I've seen before include "habits' - one who has them" , "of the same origin" , "Female sibling" , "Senior nurse; relative" , "Martin --, film director" .)