She has complete confidence (5)
I believe the answer is:
faith
This might be a double definition.
'she' is the first definition.
'complete confidence' is the second definition.
'faith' can be an answer for 'confidence' (I've seen this before). I'm not certain of the 'complete' bit.
'has' is the link.
Can you help me to learn more?
(Other definitions for faith that I've seen before include "A woman" , "Strong belief in a supernatural power" , "'..... will move mountains'" , "religion" , "Total trust" .)