Hate changing her name (4)

I believe the answer is:

thea

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'name' is the definition.

'hate changing her' is the wordplay.
'hate' can be anagrammed to 'THEA'.
Though, I'm not clear how this is indicated.

Can you help me to learn more?

(Other definitions for thea that I've seen before include "Female name meaning 'goddess'" , "Girl's name, tea genus" , "evergreen shrubs?" , "... Girl" , "Plant" .)

I've seen this clue in The Mirror.

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