I really am not sure how you could justify her not being banned.
It was art. Tada. See what I did there. Technically it was actually her yearly artsy photo thing. I don't think she should have been banned, and neither should Trump have been... Some sort of "time out" then sure.
As for the whole narrative that Trump incited the riots. Given the actual law when it comes to free speech, the precedent, what he actually said in the entire speech like 1/3 of the way through saying they were going to walk over there and peacefully protest (which the left media does not play in their outrage clips), and his tweets during it, I'm pretty confident the courts would ultimately find him not guilty. Watched a video from a left wing lawyer who really has nothing good to say about Trump, but he tends to agree as well so take it for what it is.