I felt the original drew things out a bit to create suspense. This one didn't, everything went super fast. All the elements in the original that they tried to redo felt like they didn't really try to put an effort in to do it justice (the tree, the clowns, the tv, etc.) I think they tried to put more "shock/scare factor" things in it that it took away from the psychological scare factor. It's still probably scary for a little one. Definitely not campy or anything.
But I think if you feel like the original might be too much then this one might be a little too much, too. So maybe not. Has she seen any other recent scary movies? I don't know, it's so hard to judge scary things for someone else since we all react differently to them. What's scary for me won't be scary for someone else. I also loved scary movies at 6 and watched them all. I was a pretty fearless child with scary movies.