"Aha! I know! In order to facilitate the loading up of our new, excellent workhorse here, we need some assistants, do we not?" Patella asked eagerly.
The family members nodded, John having awoken from his slumber. His shocked expression from seeing Amie's new body hadn't quite worn off when he nodded.
"Well, who else could that be than the two other, also prime subjects: Ellie and Jared!" Patella finished his statement with another cackle. The two siblings looked over to each other, peering over Amie's large torso, worried that they too would become beasts of burden. "Oh, do not worry, you shall still both keep MOST of your humanity! Now, then, wheel them forward!" Patella sneered as he inserted a special set of reigns into her small mouth, undoing her restraints and leading her forward. He then connected the two sibling's beds to a harness on Amie's back, and led her forward. She pulled the beds with ease and grace, expected from the large shire body she was given.
"Now, to begin!" he said, whipping out two more syringes from his pocket. "It''s a damn miracle I haven't stabbed myself yet..." he thought to himself, with his pockets full of various syringes and such. He went over to Jared first, looked into the boy's eyes, tearful as they were. "This will only hurt a little..." Patella soothed, stabbing the needle into Jared's arm forcefully. He screamed in pain, passing out quite quickly. Ellie however was far less perturbed by Patella's act. She glared at him with a hatred reserved for the lowest level of Hell, to which Patella beamed back, "Now it's time for YOUR vaccine, young lady!" He then repeated the action with the other syringe, and Ellie yelped a little, but was sure to avoid going Patella the pleasure of paining her.
"Now, your changes should be starting soon... aha, I see the first evidences in Jared!"
Soon, the two sibling's arms were changing. They were... lengthening, soon reaching past their feet, dangling off of the end of the beds. Both Jared and Ellie's arms ended at 6'6" long, the same height as Amie now was. Soon, however, other changes took place. Ellie started to squirm as she felt her hands change, both of them craning their necks to watch what was happening. Their hands were changing, simplifying... Their 4 main fingers became one, large one, like a mitten. Their thumbs then copied the action on the other side, widening to the same width as the combined fingers but opposite in position. Their "fingers" each then began to shorten, the bones disappearing completely from their arms, replaced by tactile and flexible muscle. The skin then turned wrinkly and grey, and felt rough to the touch. Both Ellie and Jared's arms have been replaced by elephant trunks!
"Aha, it worked, it actually worked!" Patella beamed, strapping more restraints on the arms of his two newest victims. Ellie was crying, while Jared lay lifeless, still in shock from this change. Patella inspected Jared's arms, poking them, looking at his "hands." "Huh, no nostrils... not quite what I wanted, but it will do!" He ordered Amie to return their beds to their respectful positions, and then to bring out _____'s bed!