See, too me, his not attending doesn't really "look bad". I'm not a private person particularly, but I do tend to want to be alone when I'm sad. If something tragic happened to someone I loved, I wouldn't really want to mourn in front of the public. I don't see that as evidence against him. Likewise, *if* he were innocent, I wouldn't judge him for not fighting the custody. He's clearly a suspect. Even if he weren't guilty, he may think that his daughters would be better off elsewhere for the time being. Again, not evidence against him in my book.
Plenty of other stuff doesn't look right to me, but those two things don't seem like evidence to me (not even circumstantial).