Me personally, I don't think Howard did anything to her. He said she wanted to jump in the coffin with Daniel, so why would he have to "push her in," so to speak?

I can't imagine losing a son and having a child all within a week. I'd probably be a wreck too. Honestly, I bet he's kicking himself for not spotting tell-tale signs of a suicidle and/or depressed person sooner. Grief like that must be unbearable. And we know it was, because now she's dead.

Ohhh, the drama...