Reiger might not have known that at the start, when he learned that Loki and the clan leaders had found him a teammate and arranged for him to team up and venture into the underground city with a newcomer from the clan, Rephia had resolved to grow.
Because Rephia was well aware of the problems she harbored.
Unlike the rest of the clan executives who debuted as adventurers, accustomed to fighting monsters, even engaging in fierce mortal combats, Rephia came from an academic background—an elite who grew up in an ivory tower, quite different in thought and awareness from those adventurers who were used to putting their lives on the line daily.
Before joining Loki's clan, Rephia had developed in a very stable manner and became a high-level adventurer upon becoming an adventurer. Rephia was actually not accustomed to intensely fierce battles.