Of course, she didn't. She was famous for her atheism. That did not, however, mean that she believed you could do as you please morally.
All she is telling us is that her beliefs are right without telling us BY WHAT AUTHORITY they are other than to refer to her own.
If all you know of her philosophy is what you've been told or, perhaps, read in "Atlas Shrugged", I could see why you might think that.
RE: Of course, she didn’t. She was famous for her atheism. That did not, however, mean that she believed you could do as you please morally.
Therein then lies the incoherence of her philosophy.
If we all came from random collision of atoms and are eventually going to go to the same state, what objective or REAL reason is there to NOT do as we morally please?
What objective universal rule in her ultimate worldview makes her morality superior to others?
You seem to know about her philosophy a lot, well, please explain the above to me given her atheism...