How Emma knew where to go

Danielbeast says:

As for Emma, she called me out of the blue, asked me if I knew where Jonas was. I didn't know she was planning to go down there! I probably would've gone with her if I did. But she didn't tell me, so I didn't. She really didn't sound that sick at the time. I hope she's OK. If Jonas emails again, I'll let you all know how she is.

You guys want me to just go run off to Mexico. I don't really get why. Jonas and I swapped emails, and he agrees there's not a whole lot for me to do down there. It's a fact-finding mission, you know? And Jonas is getting all the facts. If he needs me, he'll let me know. I don't really know what the deal is with Sarah, I think Jonas's attitude at this point is, she made her bed, let her lie in it for a while. He's got other things to think about, anyway, now that Emma's down there. What a trip that was, seeing her in that video! She surprised me as much as she surprised Jonas with that one.