Doing nothing about father is a crime (10)
I believe the answer is:
infraction
'crime' is the definition.
(infraction is a kind of crime)
'doing nothing about father' is the wordplay.
'doing nothing' becomes 'inaction' (I've seen this before).
'about' indicates putting letters inside.
'father' becomes 'fr' (abbreviation as in a priest's title).
'inaction' enclosing 'fr' is 'INFRACTION'.
'is a' is the link.
(Other definitions for infraction that I've seen before include "Breach of agreement" , "transgression" , "Violation of law" .)