I believe (not know) that she tried to keep the LE dates open last year, but DALS "sweetened the pot" for those days as she was seen as the key draw for the show.
This year, I believe that they correctly guessed that she (especially along with Gregoire) would still be popular and so they contracted her for every show.
As she has proven that she is (they are) "of interest" in the DALS LE circuit, Gregoire and her could become "regulars" for many years. However, hopefully next year she can get the LE weekend off.