Edward accepts a relative being teased (7)
I believe the answer is:
taunted
'teased' is the definition.
('taunt' can be a synonym of 'tease')
'edward accepts a relative' is the wordplay.
'edward' becomes 'ted'.
'accepts' indicates putting letters inside.
'a relative' becomes 'aunt' (aunt is a kind of relative).
'ted' placed around 'aunt' is 'TAUNTED'.
'being' acts as a link.
(Other definitions for taunted that I've seen before include "Deliberately provoked by poking fun at" , "Mocked, jeered" , "Jeered at in a cruel and hurtful way" , "Twitted" , "Derided, mocked" .)