Milking time!

"Hey, Sarah?" asked Karyn.
"Yeah? What is it?"
"Well, I was wondering if, uh..."
"Go on, spit it out!"
"Well, do you think you could make me and Jon lactate? Isn't that what breasts do? I'd just love to have the feeling of being swollen with milk, and to feel the relief of having it squirt out of me."
"I have a better idea," said Sarah. "I wish that Jon and Karyn were always lactating a delicious, nourishing, sweet-tasting milk with the power to heal anyone who comes into contact with it." The stone glowed, and Karyn felt herself swell with sweet milk. Before her transformation, she had always wondered what it would be like to breastfeed after pregnancy; now, she would be able to nourish anyone, not just an infant.
Sarah was curious as to how her breasts' milk tasted. She experimentally bent Karyn up to her mouth and sucked, squeezing her to spray more milk into her mouth. To her surprise, the milk tasted delicious, like melted ice cream, except it also quenched her thirst. She then did the same to Jon, in order to relieve his pressure.
From Jon's perspective, it felt a little bit like urinating, with his nipple feeling just like a penis and the milk like pee. Except, the sensation wasn't just relief from pressure, but also a pleasurable, almost sexual feeling. As a boy, he had fantasized about Sarah giving him a blow job; he had just never expected to be attached to her body at the time! When she finished with him, he felt relaxed and relieved. He was glad to have this added dimension to his life as a breast; he now had a special purpose, to provide tasty milk for his owner. He felt content with his new role.
Sarah glanced at her elbow, where she had a scar from falling on a balance beam as a young girl. Before her eyes, the scar tissue shrank away, leaving a perfectly smooth patch of skin. She then realized the tremendous potential of her breasts' milk as a miracle cure! What to do next, she wondered?