No, the dad isn't in the clear because he's a coward. He doesn't do anything to defend or even try to mend his relationship with Claudia. He's scared of her, his own fucking daughter, just because she has the dark spirit king's blessing.
Why is the first instinct for you guys is to wish death on the parents for just being scared? I rather they see the errors of their ways and realize there's nothing to fear and apologize profusely for being fearful idiots.
i hope her parents die a painful death.