"I see...Well, um, how to put this..." Rachel paused briefly, trying to think of how to explain what she figured might've happened. Of course, it was an assumption based on her own circumstances, but it was better than nothing. "I [i]think[/i] you might've gone through a portal to another world."

A few moments later, the sheer craziness of what she'd just said hit Rachel. It [i]was[/i] an honest guess at what had happened, but if it was right, the other girl was probably completely new to that sort of thing. In which case the explanation would probably sound utterly ridiculous and she'd seem crazy. 

"Um, I mean...uh..." She stammered, trying to figure out how to explain her explanation without coming off as even crazier.