Evidence of earnings putting comedienne on edge? (5,4)

'evidence' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'earnings putting comedienne on edge?' is the wordplay.
I cannot really see how this works, but
'earnings' could be 'wages' (I've seen this in another clue) and 'wages' is found within the answer.
'edge?' could be 'slip' (edge is a kind of slip) and 'slip' is found in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).

'of' acts as a link.

Can you help me to learn more?