Crossword Genius

Gangster’s girl wanting some more money (4)

Ross

I believe the answer is:

moll

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

Here is my best explanation:

'gangster's girl' is the definition.
(I've seen this before)

'some more money' is the wordplay.
'some more' becomes 'mol' (I can't justify this - if you can you should give a lot more credence to this answer).
'money' becomes 'l' (L can mean 'pounds').
'mol'+'l'='MOLL'

'wanting' acts as a link.

Can you help me to learn more?

This clue was last seen in Evening Standard