I found the throat slashings rather numbingly graphic to be honest (I have a very vivid imagination and believe everything I see at the movies; I'm not one of those people who can tell himself that it's only a movie), and the revulsion intensified by the bodies then sliding down the chute and hitting the floor head first with necks snapping, etc. Now, I think that's EXACTLY what they should have been with this material and with this director. But it is VERY graphic.
Honestly, DR Vixmom, I'd wait four months for the DVD and then view it yourself first and make the decision. It's not like she's NEVER going to get to see it. So she has to wait a few months? It won't kill her. (Bad joke; I know.)