Jeff thought back to his dream, the first animal that his dream had was a cow, so the details changed that his mother's new species was now a cow. Jeff continued to change the details of his mother to what he wanted. He wanted her to at least be 50% of her new species, enough that he could still recognise her as his own mother. He wanted the transformation to be short as possible, so the details changed to make the estimated time of the transformation to 30 seconds. Jeff wanted to make the transformation pleasurable for his mother, so she wouldn't be under any sort of pain during the transformation. But he made sure that she wasn't aware that she's changed and that everyone believed that she was always a cow. Jeff was finished with the changes in the details, as a screen popped up in his vision, reading:
To complete transformation, raise hand and say "Transform".
Jeff raised his hand towards his mother, pointing the spiral mark on her.
"TRANSFORM!"
Her stomach expanded, bulging and bulging until it became a separate part of her body, lowing down where four nipple-like prongs pushed through the now pink skin. The new appendage lowered near the floor as it was filling up with a liquid, a liquid that was familiar to Jeff, milk. Her feet burst through her shoes, revealing her new hooves, as fur started reaching up and covering her whole entire body. Her hair started to turn black, as to match her new black and white patched fur. Two of her fingers shrunk down in the skin of each of her hands to create a more hoof-like appendage. Her ears pushed out, becoming more oval shaped until they were cow ears. Her jaw and nose pushed forward, combining to create a cow muzzle. Her tongue lengthened until it was long enough to lick the insides of her nose. Her spine pushed through her skin, covering with her new fur to create her tail.
The transformation was complete. Lauren's eyes unglazed as she looked at the happy Jeff.
"Oh, it's been a long day, could you get the groceries out of the car, dear?"
It worked, she was now a cow person. Exhausted, Lauren sat down on the nearest stool in the kitchen "It's been a long day". Jeff was so happy, his dream was coming true...