Mimicry makes her weep (4)

I believe the answer is:

mimi

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'mimicry' is the definition.
Both the definition and answer are singular nouns.
Perhaps they are linked in a way I don't understand?

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for mimi that I've seen before include "Tragic heroine" , "unfortunate sewer" , "'They call me - - ' , (Lucia)" , "Starving character of "La Boheme"" , "La Boheme character (whose tiny hand is frozen)" .)

I've seen this clue in the Evening Standard.

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