Mary doubles over, clutching her large udder. Her shirt begins to feel tight around her, making breathing more difficult. She moans as pressure builds on her head and in her feet.
Jess can do little more than hunch over Mary, delicately holding her sides in an act more of comfort than of any physical help. As she watches, Mary's body swells. The seams of her shirt begin to tear apart.
Mary's feet lengthen as her toes merge and harden into black hooves. Her legs shift and her thighs thicken in order to sustain the added bulk of her new fat and udder. She gives a loud, yet rather deep scream as her shirt rips off completely. The tattered fabric falls off to reveal a plump body covered in a thin coat of white fur. Jess watches the coat thicken and form dark patches scattered over Mary's body.
Mary's torso lengthens as her breasts shrink into her chest. Her nipples disappear into the white fur. Meanwhile, her udder swells larger, the teats lengthening and dripping milk onto the carpet.
Two horns cut out of her forehead. They grow out five inches and curve slightly. Her face pushes out into a half-muzzle, with a wide nose and white fur. Her hair recedes into her scalp, being replaced by more fur. Her neck thickens, as do her arms, as a good layer of soft fat forms her body.
The pain subsides, and Mary sits on the floor. The pain in her udder has lessened now that her body has grown to accommodate a larger load.
Jess is speechless after watching her friend become almost a complete cow. "Can...can you still talk?" she quivers.
Mary's elongated mouth moves silently a few times before she is able to properly form the words. When she finally speaks, her voice sounds almost as deep as a man's. "Y...yeah, I can. That was weird."
Jess helps the large cow-woman to her hooves. Both their udders knock into each other and they giggle. "You're okay, then?" Jess asked.
"Relatively speaking," Mary nodded. She continued caressing her udder absent-mindedly with her three-digit hands.