Feels sorry for trick, we heard (4)

I believe the answer is:

rues

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'feels sorry for' is the definition.
'rues' can be an answer for 'feels' (ruing is a kind of feeling). I'm unsure of the 'sorry for' bit.

'trick we heard' is the wordplay.
'trick' becomes 'ruse' (I've seen this before).
'we heard' shows a homophone (sound like).
'ruse' sounds like 'RUES'.

Can you help me to learn more?

(Other definitions for rues that I've seen before include "Is sorry for - plants" , "Regrets, to be sure" , "Bemoans" .)

I've seen this clue in The Telegraph.

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