When I have about half done, she appears (5)
I believe the answer is:
irene
'half done she appears' is the definition.
I can't tell whether this definition defines the answer.
'when i have about' is the wordplay.
'when i' becomes 'ine' (I can't explain this - if you can you should give a lot more credence to this answer).
'have' indicates putting letters inside.
'about' becomes 're' (regarding).
'ine' enclosing 're' is 'IRENE'.
Can you help me to learn more?
(Other definitions for irene that I've seen before include "woman" , "Goddess of peace - Byzantine ruler" , "Greek goddess of peace (English name)" , "Girl's name (meaning Peace)" , "Female name" .)