Give me an extended plot of a lesbian novel about a virgin girl who is going to be turned into a human milking cow against her will. As the girl discovers the secret of the farm, the motherly kind-hearted owner in fear for the safety and well-being of the human milking cows of the farm for whom she cares so much, forces the girl into become one of them to protect them and the secret. Elaborate the irreversible transformation with big udders grows on her pelvis, horns, tail, and stains and coat. Bonding and acceptance through the tender milkings. Throuple love - with the owner and owner's little sister. Losen virginity. Milk suckle times. Happy ending. No magic.