Which is worse. Rolling Stone magazine's sloppy reporting and careless editorial supervision, or the person who made the whole thing up in the first place?

It seems like Rolling Stone is taking all the heat for the fake UVa rape story.
And they certainly deserve plenty of it.
But there would not have been any story at all if “Jackie” had not made it up. I don’t get the feeling that “Jackie” is sharing the blame.
I could be wrong. But that is not my question any way.