A girl for Easter? (6)

I believe the answer is:

teresa

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

'a girl' is the definition.

'easter?' is the wordplay.
'easter' anagrams to 'TERESA'.
But, I am not sure how the anagram is indicated.

'for' acts as a link.

Can you help me to learn more?

(Other definitions for teresa that I've seen before include "Mother...saintly nun of Calcutta" , "Saint" , "Girl's name" , "Late nun, dedicated to helping the poor in India" , "Mother of Calcutta, 1910-97" .)

I've seen this clue in the Evening Standard.

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