In fact, she had taken out a treasure from inside the vehicle and placed it by her side just minutes after the squad entered the Secret Realm, ready for unexpected needs.
As for the demise of a young genius in their debut battle, such incidents had indeed occurred in the history of the academy.
The Secret Realm was like that, although risks could be assessed based on type and intensity, the probability of safety would never be 100%, not to mention unpredictable mutations within the Secret Realm; more common troubles also included "competitive rules".
This was a form of rules-based Secret Realm, where humans involved were forced to compete and eliminate each other until the Overlord was completely satisfied.
Without a doubt, this was the nightmare of Vanguard Squad, but the good news was that mature, united squads were almost never involved in these rules.