I don't think Andrea ever had any intention of trying the fraud trial. I believe she has advised Casey to plead guilty to the fraud charges. Baez may have wanted to do things differently, but Andrea is the lead attorney now, and she has seemed much more resigned to the inevitable lately. The judge will let her sentence be time served, and the state will get their desired result. Casey will be a FELON because of the guilty plea, so the end is well decided. There is no reason to waste the judge's, the State's or even the defense lawyer's time delaying what is a given considering the overwhelming evidence against her.
I am not a lawyer, but to me the funny thing is that it is bold and horrible PR to post a book signing tour date that makes it obvious you had no intention of showing up, and the trial schedule is messed up at everyone's expense and inconvenience. Let's hope that behind the scenes this was agreed on and we just haven't seen the filings because of the holiday. Otherwise, ....it's hubris. Again.