Doesn't she heal well? (4)

I believe the answer is:

leah

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

'doesn't she' is the definition.
'Leah' can be an answer for 'she'. I'm not certain of the 'doesn't' bit.

'heal well?' is the wordplay.
'heal' can be anagrammed to 'LEAH'.
Though, I'm not sure how this is indicated.

Can you help me to learn more?

(Other definitions for leah that I've seen before include "Heal (anag) - girl" , "Rachel's sister" , "her elder sister" , "Jacob's first wife (Bible)" , "First wife of Jacob" .)

I've seen this clue in the Evening Standard.

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