I'm not totally sure about this, but I think what happens after the KAL is that her patterns are put up for sale on her website. Looking at the Flickr images of Mystery Stole 2, it looks like her Scheherazade stole that can be bought. I think once you miss the deadline for registering, you can't (w/o infringing on copyright) get the pattern in clues anymore.
It's sad, but I just
got an email from her sent out as a special notice to all MS3 members about not sending out the pattern clues to non-members because it infringes on her copyright as designer.