No one has stated, or asked what flag the aircraft was under.
In our culture, assault is assault and carries criminal charges regardless of whether or not the victim is known to the attacker or not.
In strict Muslim cultures where Sharia Law is practised, the woman is treated as inferior to the man and is expected to tolerate beating from her husband, father or brother if she does not obey their wishes!
Could this, perhaps, be the reason why the crew took no action?