Crossword Genius

Girl not wanting a financial backer (5)

Ross

I believe the answer is:

I'm a little stuck... Click here to teach me more about this clue!

'a financial backer' is the definition.
(I've seen this before)

'girl not wanting' is the wordplay.
'girl' becomes 'ange'.
'not wanting' becomes 'l' (I can't justify this - if you can you should believe this answer much more).
'ange'+'l'='ANGEL'

Can you help me to learn more?

(Other definitions for angel that I've seen before include "Guardian spirit; theatre investor", "Spiritual being - financial backer", "darling!", "Old coin; theatre investor", "somewhere on the Northern Line".)

I've seen this clue in The Telegraph.