I feel bad for the sister like imagine having an unhinged psycho who lives under the same roof as you however the parents should have seen a specialist bc they clearly knew something was off (assuming they haven't done so already)
His mother had a clear idea regarding his personality but most likely chose not to do anything since her never caused any 'trouble' and he was a perfect student. Major mistake.
I feel bad for the sister like imagine having an unhinged psycho who lives under the same roof as you however the parents should have seen a specialist bc they clearly knew something was off (assuming they haven't done so already)