Negligence, definitely! Murder...I don't think so. 
Not unless I'm missing some information.
Do you have any kids? Just wondering because kids are basically a big ball of needs and not knowing they want food is to state it bluntly, impossible. its murder when you refuse to feed your kids, negliance is putting your kids in a hot car and shopping, and they die, tragic yes but you can see that there is a difference between the intent to watch your baby die which is what this couple must have wanted, and the intent of just not caring if they lived or died which is negliat. Or not taking the steps to avoid a tragic event from occuring which is negliance and actually forcing the event to occur which is murder. So for instance not fixing the basement stair and my wife dies is neglect, but by prying the stair loose and my wife dies its murder. This couple must have wanted this child to die, plain and simple, I would believe its neglect if it wasn't for the fact that they must have known the baby was dying, and if the baby was just sick then I would say neglict but they forced the sickness on their child, just as its obvious to anyone that a dog is underfed and starving when you look at it a baby is even easier to tell when its malnourshied, and this couple deserves what they got for not only making the child sick but then not taking any steps to make the child better.
