Return to her or someone else (5)
I believe the answer is:
other
'else' is the definition.
(similar in meaning)
'return to her' is the wordplay.
'return' is a reversal indicator.
'to' backwards is 'ot'.
'ot'+'her'='OTHER'
'or someone' acts as a link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for other that I've seen before include "Different; alternate" , "Different, not the same one or this one" , "Distinct" , "Remaining" , "Different, alternative" .)