John, angry at his forced transformation, reminds Mary of a simple fact: bulls aren't timid, meek, non-dangerous creatures.
John bellows and charges at Mary with his head lowered.
Mary, unable to react quickly enough because the bellow frightened her, freezes as John begins his charge.
John skewers Mary on one of his large horns and with a flick of his powerful neck he throws Mary off his horn and she smashes into the wall, breaking several bones in her arm and almost half caving in her skull.
Mary screams in pain. John snorts at Mary who is bleeding from the wound in her gut. John pays Mary back for her cruelty and stomps on her with his huge new body until Mary is dead. Guts are pushed out of her and there is blood everywhere. As one last gesture of hate, John stomps on Mary's head.
With that, John decides he needs out of he house and begins breaking down the back door with powerful kicks of his hind legs.
Mary's days of using her vials on men for revenge are over. Mary is dead, dead, dead, DEAD!
It was stupid of Mary to turn John into a bull, John thinks as he walks out the door, they can't convict a bull of murder, can they?