The end was innevitable. She had to face herself, the battle, and the insanity. The Qweens were made to fight one another. They all had to.
Because the floor was checkered, and Alice was just playing with herself
For the record, I went to great lengths to keep it as close to the original illustrations as possible, but eventually failed. There’s a filosophical reason to it (as well as I can’t concentrate for long): Alice is different for everyone.
And she has to be, because Alice will always be the mirror of our madness.