As Joan's mind began to process her new instinctive knowledge, she found she was able to affect far more than she had thought.
She knew everything, including why she knew everything.
Reality itself affects humans, so I now have control over all of reality.
She knew even that there were no other Ultimistresses: there could not be another while she would be immune to that other's power. There were around thirty-five Fem-Masters out there, but they weren't of any real concern. She could deal with them whenever she wanted--quite literally, for time, being something that affects humans, was something she could control at will.
Manipulating light, gravity and the air, she floated invisibly and silently off the ground. Moving she could accomplish in any number of ways, from other alterations to gravity to shifts in air currents. She floated into the kitchen, not even leaving any sort of wake in the air to mark her movement.
Seeing Mark's mother still slaving away reminded Joan of what Mark had done. Focusing, she undid Mark's wishes affecting women, and his mother regained her old form.
You deserve a little more, since your son--well, your daughter, now--was so much of an asshole.
Mark's mother grew all over. Her clothes shifted with her, changing to suit her new form.
Mark's mother was now a powerfully-built 6'6" woman. Her large breasts remained, but now they served as a statement of her power rather than of her submissive femininity. She wore a custom-made sports bra under a midriff-baring shirt barely larger. Her only other clothing was form-fitting short shorts, leaving most of her hard, muscled body on display. Joan did reinstate the wish about women lactating, only she changed it, allowing them to do so at will and only then, as well as allowing them to express any fluid they wished.
Causing the door to become temporarily nonexistent, Joan went outside, ready both to deal with the Fem-Masters and to have some of her own fun.