In this case WF would likely attempt to trap her within a narrative bubble or loop, but she is able to escape from any dimension that attempts to trap her, and no he wouldn’t be able to physically overpower her because the Mask of Eternity levels the playing field. It doesn’t run out of power either. He could win, but she could as well.
The mask levels the playing field.........to a point. See her fight with one of the Beyonders. She didn't want it once the Beyonder stopped playing around.
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..even the outer hells are indifferent matters for they bow only to potent and archaic Nodens.