If you think your daughter has any questions about hazing, risk management or other aspects of Greek life, feel free to send her to GreekChat.
I'm sure we can answer most of them. As for hazing, you're right when you told her that the national organizations try very, very hard to prevent any hazing, and they do manage to catch most of it -- a sorority that did anything to the scale of what happened at GBN this year would have had their charter pulled long ago. All the Big 10 schools have pretty strong Greek systems, and I assume their Greek advisors are all pretty involved in preventing hazing. Of course, it can't be guaranteed that none of the sororities haze, but I have friends in quite a few of the sororities here, and none of us were hazed a bit (we were definitely treated like princesses), so odds are against it.
I know there are sorority girls here at GC from Wisconsin, Michigan, Iowa, and Indiana, if not some of the other Big 10 schools, so hopefully they can weigh in too.