The difference between her and the poor black woman who went to jail for a few years (based partially on a plea deal for dealing drugs, which was an excessive sentence but glossed over here) is all about social class and wealth. I agree with the basic idea of "white privilege" but it's not a fair comparison here.
Wealth decides who can hire the good lawyers, and preserving her kids' class status is exactly why she committed the crime in the first place. Of course, neither of them should have gone to prison.
Most of the rich freaks in Hollywood are probably gaming the education system in some way. It may be above board legally, but all of these celebrities pushing for unaccountable, union-busting charter schools are just as damaging as what Felicity Huffman did, if not more. They certainly affect more people.