Decide on artist to depict vengeful daughter (7)
I believe the answer is:
electra
'vengeful daughter' is the definition.
(I've seen this before)
'decide on artist' is the wordplay.
'decide on' becomes 'elect' (I've seen this in another clue).
'artist' becomes 'RA' (Royal Academician, member of Royal Academy of Arts).
'elect'+'ra'='ELECTRA'
'to depict' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for electra that I've seen before include "type of complex" , "complex character" , "legendary Greek daughter" , "Mourning Becomes ____ (play cycle Eugene O'Neill)" , "Female avenger" .)