How long ago was this? Was it the same day that you typed this up? (as in, did you just wait a few minutes for it to show up, then write this?)
I've had a few times where a con didn't send it right away. If she gave them your email but only as the person the badge is for, then you will only be receiving the "here's your proof" email. Which I've had that take some time. I remember sakuracon once it took like 4 months to get it. I think it has to do with something like processing so many at once and a staff member is the one sending those emails..So it's going on a list and your name get's added once they are paid for, then yours gets sent to you once they get to it.
Idk how this con works though, but it sounds like it could be that.