Belinda doesn't even notice when Mr. TF gets lodged between her buttcheeks, and continues to gorge herself on the cake. Her growth is not only outward, though. To accomodate her massive weight gain, she has also been growing upward as well. Her head now touched the ceiling of the room, and her girth filled up most of the area as well.
With what little room is left in there, Belinda grabs one more cake, and literally tosses the whole thing into her mouth as if it were a brownie.