What if the ubermensch is she who understands higher truths yet understands that her role in all of existence is lesser? So she has to play the role the best she can, even though she knows the higher truth and that this life is just a spatiotemporal slice of the whole, but still her place is here and now. Like having the mind and soul of a god, but still the body of a human. Could the human form even contain that.

Per usual, Nietzsche precedes me and articulates this better than I can in The Birth of Tragedy:

“Suppose a human being has thus put his ear, as it were, to the heart chamber of the world will and felt the roaring desire for existence pouring from there into all the veins of the world, as a thundering current or as the gentlest brook, dissolving into a mist—how could he fail to break suddenly? How could he endure to perceive the echo of innumerable shouts of pleasure and woe in the “wide space of the world night,” enclosed in the wretched glass capsule of the human individual, without inexorably fleeing toward his primordial home, as he hears this shepherd’s dance of metaphysics? But if such a work could nevertheless be perceived as a whole, without denial of individual existence; if such a creation could be created without smashing its creator—whence do we take the solution of such a contradiction?”