Because I even asked and enough people said OKAY, including MAF's indifference to hit ACCEPT.
She's not permabanned because that's not my goal here. As admin, my goal is to moderate the least amount possible - the enforcement is for moderators to handle. Permabans are especially a moderator decision (albeit approved by me on certain circumstances). The only reason I stepped in was because she was posting crazy threads on Jews and distinguished mentally-challenged fellows, and no one was around.