Shrieking girl turned money into silver (9)

'shrieking' is the definition.
The answer and definition can be both to do with communicating as well as being present participle verbs.
Perhaps you can see a link between them that I can't see?

'girl turned money into silver' is the wordplay.
I cannot quite see how this works, but
'girl' could be 'lula' and 'lula' is found within the answer.
'money' could be 'tin' (old-fashioned slang term for money) and 'tin' is located in the answer.
The remaining letters 'ug' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?