Arianna had a fantastic night after spilling the beans to Maxim the night before. Arianna couldn't concentrate on her problems because Maxim was preoccupied with Lucas.
Arianna was not in the mood to do her missions the day before because of Lucas, so she decided to do missions for both days that morning. She awoke around seven o'clock in the morning and vanished into system space for her missions.
It was extremely stressful for her because she had to complete twice as many missions. Arianna was forced to not only cook, write, and learn languages, but she was also forced to complete three consecutive martial arts missions.
She would have just put them aside if she hadn't needed to learn how to protect herself in the future, but this wonderful system did everything for her own good. That is why she persevered despite her body being sore and aching all over.