Tanya suddenly grabbed her gut, and she suddenly fell forward, reaching out toward the bed as she fell.
"Tanya!" Chris exclaimed, as he went to help her. She was moaning loudly, and appeared to be feeling something very intense.
Chris was going to help her, then he saw her hand on the bed. Her nails were lengthening and her finger's were growing longer. He stared as her nails, became darker and more claw like. He backed up and looked at the rest of her body.
She was moaning even louder now, and he saw that her clothes were tightening, and began to split across her back as her shoulders and frame grew. He saw her thighs explode out of her pants, and her clawed feet burst our of her socks.
Her moans deepened as she continued to grow in size and stature, her body expanding with each breathe.
Suddenly, light brown fur began to cover her, starting with her stomach and spreading very quickly. She whimpered as it covered more and more of her body. However she soon had a different feeling, and her jaw suddenly pushed forward, her mouth and nose elongating into a muzzle, she tried to let out a yell, which turned into a howl partway through.
Finally, the changes seemed to stop, and she crouched there panting.
Chris had watched all this through terrified eye's, and he was backed against the wall, heart rate going through the roof.
Her panting had slowed down, and his sister rose from her haunches.
Chris followed her with his head until he was almost looking straight up. My god...
She was enormous! Her body was packed with muscle, and her frame had expanded immeasurably. She was covered in light brown fur, which lightened considerably on her chest on stomach, and was much darker on her backside. Her head looked much like a wolf and she had rows of razor sharp teeth. Her hands were much larger, and resembled paws, although they still looked dexterous. He feet were humongous digit grade paws, and the remnants of her socks still clung to them. Chris had to look up to see her face, and she seemed to be about 7'4. Despite her musculature, she seemed to maintain a lithe and feminine build, despite growing to an amazonian size.
She opened her eye's and Chris saw her deep golden gaze. She slowly looked down at herself, then up at Chris, taking in his terrified gaze. Their eye's met, and Chris saw that while the color had changed, the shape of her eye's was the same, giving her an intelligent gaze.
Then something very peculiar happened. She started sniffling, and making a whimpering noise, and Chris saw her eye's were getting wet. She backed up and fell onto the bed, the mattress straining with her weight. She came to a sitting position, and clenched her hands against her sides. She put her head down and began to cry loudly, tears running down her face, whimpering like a puppy.
"Chris?" her voice sounded deeper, but still had a feminine tone.
"Wha...What happened...to me?" she was sobbing uncontrollably now.
Chris had seen his sister cry on a few occasions, and none of them were like this one.
He had to do something...