Soft-hearted nurse (6)

I believe the answer is:

tender

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

This could be a double definition.

'soft' is the first definition.
(similar in meaning)

'hearted nurse' is the second definition.
'tender' can be an answer for 'nurse' (I've seen this before). I am unsure of the 'hearted' bit.

Can you help me to learn more?

(Other definitions for tender that I've seen before include "craft" , "Make offer in gentle way" , "Gentle, sympathetic" , "Youthful" , "A gentle kind of bid" .)

I've seen this clue in The Globe and Mail.

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