This is the email from Petra just mins ago:
Thank you for your application to the Mathematical Finance Program. We
have now reviewed all of the files, and I regret to inform you that it
appears unlikely at this time that we will be able to offer you a place
in this program for the coming year. There have been many excellent
candidates, and we were unable to accept them all.
However, we have left your name on the waiting list in case positions
become available within the next few months.
In any event, I wish you all the best in your future studies and thank you for your patience.
Oh well, at least now we can move on with life. Did you emailed her to ask or she just send it to you?