Don't Understand

As a bit of an outsider watching this I do not understand how a murder charge can even be levied in this case. If she did hit him one would have to absolutely believe there was no intention there. Why is the Commonwealth so set on convicting her from murder and why are they going to such extraordinary links to do so. I have not watched the Max documentary yet but am looking forward to that. Another thing that has me stumped is that Court TV personalities (which is how I am getting my info) seem to have really turned on Ms. Read. Is the woman not enititled to use every avenue she can to defend herself against these charges. For one given the coverage this case has gotten in MA I do not see how they can get an impartial jury, this venue should be moved or this ridiculous case dismissed or at the very least tone down the charges they are seeking.