Responses
It's probably because of her grandmother she making sure no rumor about what her granddaughter did to those victim that Lua bullied.
She is actually just being portrayed as daughter in the eyes of a father who feels guilty. He knows she was shady, he even states that
I hate the fact that Lua/Rua in their perspective is portrayed as a “nice girl” when she in fact isn’t. There is no way there’s no single rumor about her malicious behaviors. Also Chanhee man he can never catch a break, hope he lives