I feel badly for them, however, it was irresponsible to allow the daughter to drive without even a learner's permit (not that a learner's permit would've prevented the accident necessarily). Not only was it irresponsible, but it is illegal. His reckless judgment contributed to the young mother's death and while I don't think he should serve twelve years in prison, I do think that he should be punished. A plea is likely and will hopefully mete out the "right" amount of justice.
People in Drivers Ed classes don't have a learner's permit either, and they're out on major roads. It sounds like the Dad was being cautious by usng an empty parking lot and it turned tragic anyway.
In a PRIVATE parking lot ? On PRIVATE property ? I don't think so.
Now once they crossed into PUBLIC property, the street, then it was an illegal act.