Guided? Not her, being well-worn, maybe (4)
I believe the answer is:
used
'well-worn maybe' is the definition.
I can't judge whether this definition defines the answer.
'guided? not her' is the wordplay.
'guided?' becomes 'ushered' (usher can mean to guide someone).
'not' indicates named letters should be taken away.
'ushered' with 'her' taken away is 'USED'.
'being' is the link.
Can you help me to learn more?
(Other definitions for used that I've seen before include "Scottish expert" , "Went through" , "Second-hand, not new" , "Brought into service" , "Not fresh" .)