OK, here's how it turned out. I asked my hubby what he thought - I know, I know, what a wacky idea! He said he thought that he and I should see it before we decide to let the boys see it. Boy, he's smart! What a sensible idea. So, when we drop them off, that's what I tell her, and she was ok with that. Her reason for wanting them to see it was that the history in history books is so dry and boring, but history itself isn't, and this is one way to show them history in an interesting format. I told her I agreed, but that this movie probably only has the thread of truth to it and also that if it only focused on his great achievements, there wouldn't be any question that they could see it. Unfortunately, there's quite a bit of time focused on his wild and eccentric lifestyle and that's the part that I am concerned about. I'm not sure she agreed with me that I should be concerned about that (they're pretty liberal), but she respected my views on it. So, to make a short boring story into a long boring story, it turned out just fine!
They ended up watching Pocahontas and then the true greatness of Bugs Bunny!