A new guide wandered about, quiet and tormented (9)

I believe the answer is:

anguished

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'tormented' is the definition.
(synonyms)

'a new guide wandered about' is the wordplay.
'a' becomes 'an'.
'new' becomes 'sh' (I can't justify this - if you can you should believe this answer much more).
'wandered' is an anagram indicator.
'about' is an insertion indicator.
'guide' is an anagram of 'guied'.
'sh' inserted within 'guied' is 'guished'.
'an'+'guished'='ANGUISHED'

'quiet and' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.

Can you help me to learn more?

(Other definitions for anguished that I've seen before include "Dolorous" , "Distressed mentally" , "Suffering greatly" .)

I've seen this clue in The Daily Express.

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