I too hope that everything is okay. I do have her phone number, so let's give her a little more time but if we don't hear from her by mid-July I'll be willing to give her a call.
I would say that the swap is a go no matter what, though. Worst case scenario, we just need another hostess. I'd be willing to step in if needed, but I don't think we'll need it. I really hope it's just computer problems and nothing else. Fingers crossed!