I am sure that, whichever side your own sympathies lie, they are all finding it painful.
Families falling out is normally not anybody's first choice.
He might have just not been home. People do go out. Knowing his family were in town he may have made sure to be, and Harper missing him was just unfortunate fallout.
Usually there are two sides to these stories - much as people like to read them as a goody-baddie fairy tale.