Pity for a girl badly hurt? (4)

I believe the answer is:

ruth

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'pity' is the definition.
(as opposed to ruthlessness)

'a girl badly hurt?' is the wordplay.
'hurt' can be anagrammed to 'RUTH'.
However, I'm not clear how this is indicated.

'for' is the link.

Can you help me to learn more?

(Other definitions for ruth that I've seen before include "Girl's name; grief" , "Old word for pity, or Bible book" , "distress once?" , "Girl's name and Old Testament Book" , "She is followed by Samuel" .)

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

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