Valerie was mentally exhausted so she fell asleep not so long after.
Austin remained sitting on the bed beside her, once he draped a duvet over the girl.
The situation with the demon was not following the canonical events.
Originally, the demon should have realized the potential of Rhea and should have approached her. However, Austin knew that with Valerie's presence in the academy, they would target her. As such, despite knowing that they were being heard, he voiced the code and wrote a note to Valerie to remain cautious.
The reason they are targeting students even though there are far stronger people in the academy—the Vice-headmaster for example—reveals their future plans.
'The tournament...' They would be targeting some specific students to recruit them during the tournament. As such, the presence of variables who hold strong minds and overwhelming strength, like Valerie, needs to be eliminated beforehand.
