She can be strikingly enlightening (5)
I believe the answer is:
vesta
'be strikingly enlightening' is the definition.
I can't judge whether this defines the answer.
'she' is the wordplay.
I cannot quite understand how this works, but
'she' could be 'esta' and 'esta' is found in the answer.
A single letter 'v' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
'can' acts as a link.
Can you help me to learn more?
(Other definitions for vesta that I've seen before include "Stave (anag.)" , "Roman goddess; match" , "Asteroid; goddess; match" , "heavenly body" , "Roman goddess of the hearth" .)