Once the spot was chosen, Stiles dropped his backpack once again. "Okay. Let's!" There was no more time to mess around. He was pretty sure that it was going to be dark very, very soon, which meant they only had so much time to get Erin chained up and secured before she turned.
When she started to undress, he quickly looked away and started to get the chains he brought out of the backpack. "I hope this works," he said more to himself than to Erin. He had no idea what he was in for. He was used to the werewolves from his world. Not from some other place where things were different.
"Here," he handed her the chain. And once she had a hold of it, he walked around the tree, wrapping the chain around it and Erin. He made sure to leave a little bit of room since he wasn't quite sure how Erin was going to transform. If she ended up bigger than her human body, then there'd be enough room for that to happen while still keeping her secured to the tree.