It is found inside in hers, when one's left (8)
I believe the answer is:
inherits
'when one's left' is the definition.
I can't tell whether this definition defines the answer.
'it is found inside in hers' is the wordplay.
'is found inside' means one lot of letters goes inside another.
'in'+'hers'='inhers'
'it' inserted within 'inhers' is 'INHERITS'.
Can you help me to learn more?
(Other definitions for inherits that I've seen before include "Receives under terms of will" , "Without effort, gets" .)