Young woman rescuing hamster from salt marshes (4)

I believe the answer is:

lass

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'young woman' is the definition.
(informal term for a young woman)

'hamster from salt marshes' is the wordplay.
'from' is a deletion indicator.
'salt'+'marshes'='saltmarshes'
'saltmarshes' with 'hamster' taken out is 'LASS'.

'rescuing' acts as a link.
This may not be correct. It may belong to another bit of the clue.

Can you help me to learn more?

(Other definitions for lass that I've seen before include "Girl (of Richmond Hill?)" , "Young woman (-. Eng.)" , "Sweetheart" , "Familiar form of address for female" , "Sweet resident of Richmond Hill?" .)

I've seen this clue in The Irish Times and the Irish Times (Crosaire).

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