Teddy was about to jump down from the bed when she opened her mouth to scream again. Her teeth were sharpening from human to something more canine. Draco had said something about a delicate balance for her wolf. Maybe the potions were making it harder to change?
Teddy decided to give her time even as he winced as the scream escaped her throat. He hopped down from the bed and started pacing the room. How long was too long of a wait? How many minutes should he give her before getting help? How long had he taken with his first change? It had seemed like forever but he knew he wasn't a good judge because of how much pain he had been in. Teddy's ears pinned back as he waited. Wait, did she sound different? Then he flicked one ear towards Hermione.
It came again, her cries more guttural and choking. In a few leaps, Teddy was at the edge of the bed again. Hermione's nose and chin were definitely elongating. Not in the fast explosion-way of his transformation, but like lava pouring over her features. Her skin was rippling under a carpet of fur, some places a rich brown like her skin and other places darkening into a near black. He rested his muzzle down on his paws to watch, but got up after a few moments to pace again. The change was too slow to watch.
He started up his pacing, feeling caged as he barely got a few paces in before having to turn again. How had he survived his first few changes here, cooped up with nothing to do? He thought back and recalled he hadn't had a potion the first time. The wolf had had full control and Teddy didn't remember anything past the initial change. The next few changes Harry had managed to procure a true wolfsbane potion. That had affected him like a narcotic and everything had became irrelevant. Sure, he still knew his bones were melting and that his claws were spurting from raw skin. He just couldn't bring himself to care. He was too busy yawning, waiting for it to be over so he could sleep. That experience was nearly the opposite of the modified wolfsbane the pack used. That potion just made everything horrifyingly real.
With each round of pacing the room, Teddy would check on Hermione again. Sometimes it seemed like nothing changed and he would worry that she was going to get stuck midway. He had had nightmares about that before. Probably every werewolf did. Nightmares about body horror probably just came with the territory when once a month your body changed so thoroughly against your will.
Finally the change seemed to increase in pace. On each round of pacing he would see her toes flattening out into pads or the start of her tail peaking around her torso. Inch, by slow inch, Hermione changed from woman to wolf. It must have taken half an hour at least before Teddy was sure that she had fully shifted. But finally, it had happened.
Now the hospital room was silent except the quiet pants of their wolf breaths. It also seemed like she was finally lucid, her yellow wolf eyes open and aware. Then she got up, shifting to sit on her haunches at the edge of the bed. The ropes lay in a clump at her feet. When her hands had changed from human to wolf-paws, the ropes had slipped off. Luckily, by that time, she had no longer seemed inclined to claw off her own skin.
Now she seemed completely self-possessed, fully inhabiting her wolf form. And all she did was stare at him from the bed's higher vantage point, eyes glinting in the darkness.
He stared back, waiting.