Honestly speaking, Reef truly hadn't experienced being imprisoned upon waking up into a new world.
If it was truly to replenish party members, then everyone should be congregated together right from the beginning; just like what happened in the Starship Trooper World. That should be followed by a mission that requires everyone to make a concerted effort, a crisis that forces them to fight shoulder to shoulder. In this manner, successful survivors could be officially bonded through victory.
This was indeed the normal growth model of establishing a party.
Yet this current predicament was incredibly peculiar. Nevertheless, they could confirm that Yerna was definitely an ex-party leader, which explains her imposing bearing. Of course, viewing her performance, she was undoubtedly not an outstanding party leader. Therefore, she was tossed back to the start after a certain failure.