Lawyer here. Even giving her the most benefit of the doubt (not saying she deserves it), if she can’t handle the workload of the case, it needs to be assigned to a different judge. You get on the bench, you gotta timely deal with the Motions before you, difficult or not. If you can’t handle it, the ethical thing to do is ask for a reassignment of the case.
Guy Walks Into a Bar is one of the main reasons I keep coming back here.