"Yes, it is. It's strange to be such different ages, but I'm sure we'll adjust eventually. We always do." It would just be weird if she tried to boss him around, because honestly Susan couldn't think of doing that to her brother.
"I understand," she said, hoping he wouldn't really speak any more about Narnia or anything like it. She rarely wanted to talk about it as it was, though she knew there were some who knew about it...like Arthur.
Su smiled at her brother. "You don't have to work here, you know. Particularly since you'll be in school as well. Only if you want to. I make enough at the book shop to be able to provide for both of us for now.