The sun rises, as they say, and Mary wakes up well after that happens. In fact, it's nearly noon by the time Mary finally wakes up, and there are several messages on her answering machine from a very irate boss about her being several hours late. She has more pressing matters at hand, however - her entire center of gravity has shifted.
After rolling off the bed and onto all fours, Mary struggles to stand up, but finds that the best she can manage is to hop up on her hind legs shortly before slamming back down on the floor.
"This... is not good." How was she going to leave the house? She had no hands to manipulate doorknobs with. Glancing in the mirror, she looks much more cow than human at this point.
"I have to go. I have to get out. Starving." She mutters, determining to use her long and far more prehensile tongue to maneuver the doorknob and push her way out, not caring that she has left her front door ajar.
Her first instinct, to immediately go to her front lawn and munch at the grass, is acted upon. And for now, Mary doesn't mind the fact that she is steadily losing her grip on humanity.