It was no surprise to Artie that they would come anymore, but she was still stunned by the timing of the primordial creatures that even needed a whole continent to repel. However, it was already presented to her face. The second task had started, and she was supposed to repel the glass spirits. Then again, just like the first task, this wouldn't be a single encounter.
The possibility of their coming was long foretold by the system, and she could only prepare slowly. It's just that she realized that as if the system had an inkling of the progress of their coming. It was forcing Artie to secure a spot in the court of the Archduke before letting her go rampage against enemies—battles that would otherwise get her killed without additional power.