"Uh, I think so," Derek said. He wasn't really much of a tea drinker, but there were a few boxes of tea bags in the cupboard that he accumulated over time for various reasons. One of the boxes was green tea and he held it up, looking over to make sure it was suitable for Lydia.
He frowned when he noticed that she seemed cold. His own internal body temperature ran a little hotter than that of a normal human, so he didn't notice the cold as easily. He was also wearing jeans and a long sleeve shirt, so he was more covered than she was.