I'm torn on that, it comes down to motive. If it was an accident then she shouldn't be going to jail at all. If it was deliberate as contended - she was charged with murder after all - then it's shocking and strays into pathological territory - in which case should she ever be released?
I think the father would be right if it had been involuntary manslaughter but to be charged with murder for a car crash is highly unusual. Having said that it's possible this was an inappropriate charge and judgement and might get overturned on appeal.