Er...what? Do these people not know the meaning of the word "cause"? I'm going to assume that the brother and dad were handcuffed to the pipes (and only he was tied with rope), but escaping and help not getting there fast enough is NOT his fault.
The grandfather was bad enough. But the mom was relentless. She was basically asking him "what business do you have to be happy when you killed your dad and brother" when it was no way his fault.
I hate his and her mother more than the white lotus.