riven - I must take issue with your implied criticism of the father. For a start - I wouldnt believe a lot of what the press say. And secondly, even if he did realise that the mother was depressed, it's hardly reasonable to assume that he can just give up work. Most people are not in a situation where a breadwinner can just jack in their job. And anyway, just imagine the headlines if he had:
'Feckless father makes himself unemployed while mother struggles to cope'...
One thing that does seem clear in this case is that this was not a child with severe disabilities requiring around the clock care. She was a little girl, at school, who had some difficulties.
The whole event is awful and very sad, but I don't think trying to imply blame on the innocent parent is helpful. The mother was convicted of murder - the evidence must have showed that she intended to kill or seriously harm her child, and that she knew what she was doing.