She wants to be happy

Sarah looked into Tom's eyes, doubt furrowing her brow.

"This is so hard...will you still love me?"

"Of course I will, no matter what you choose."

Sarah's tail began to wag in response, thumping against the surface of the bed. She let's out an excited whimper.

"And would I still be this hot? Even if I wasn't your pet?"

"You will be just as beautiful, with fur or without." Tom ran his fingers across the soft fur on her belly. Sarah tensed momentarily before relaxing under his caress.

"...And will you still fuck me as hard and deep as I need." Her eyes were filled with animal lust.

"Absolutely. Although if you choose to stay my slutpuppy, I'll take you whenever and wherever I want. There won't be a moment when you don't have my cum dripping from your holes."

"Oh my god...that sounds so good." She was panting. "That's everything I want! I've never felt so good! This body is amazing and when you say you love me it makes me so happy and your dick feels so good inside me! I want to be your pet forever! Please do it, please!"

"Wow, you want it really bad, don't you?" Tom held the coin out to his dogwife, shaking it like a tennis ball about to be thrown.

"Yes! Yes! I want it! Yes!" Sarah yipped, transfixed by the coin.

"Then beg for it properly, like a good girl!" Tomgently chided, pointing to the floor in front of his feet. Sarah bounded from the bed without a second's hesitation and knelt at her husband/owner's feet and tucked her paws up under her chin. She became the perfect image of an obediently begging dog.

"Please-"

"Ah ah!" Tom cut her off with a tap to her snout. "I said "beg properly". Real dogs don't use their words to beg, do they?"

Robbed of her words, Sarah could only whine, tongue lolling out of her mouth. Her butt wiggled side to side as her tail tap-tap-tapped on the floor. Tom rubbed her head affectionately and she closed her eyes and leaned into his hand.

"That's my good girl. Now prepare yourself, because this might be a big a wish. I wish my wife was my faithful and obedient doggirl, without any reservations about the situation, happy to be my pet and wanting nothing more than to please me for as long as I want her."

He felt the familiar ripple radiating from the coin, through his body and then into his wife. It was more subtle than the wave responsible for her initial transformation, but more focused somehow. Sarah's eyes unfocused for a brief moment before settling on Tom's face once again.

"Did it work, Master?"

"What did you call me?"

"I called you Master! Because that's who you are! You are my Master and I love you!" She leaned forward, pressing her paws to Tom's chest.

"Oh, of course. I love you, too. Very much." He held his new pet's face in his hand, overjoyed at the thought of their new life together.