Xiao Haiqing knew his father too well. In the past, his father would be furious when he thought that she was always doing petty things. Now that there was concrete evidence that she had killed someone, he probably wished that he didn't have her as his daughter.
Even if others told him that she was in a dangerous situation, it was not as important to him as the word " kill ".
He might even think that she was more inhumane than being killed.
Xiao Daoan had a standard in his heart. In his imagination, his daughter should be sensible and considerate of her parents. Once Xiao Haiqing deviated from the image in his mind, he would think that Xiao Haiqing had done something wrong. He would not even ask why she had done that.
Xiao Daoan believed that Xiao Haiqing was a small evil in the past, but now he was a big evil. There was no hope for him.
He would rather pretend that he did not know his daughter than admit that his daughter was a murderer.