Everyone went on a mission. Only Vanessa and Hazel remained in Dawn's headquarters to ensure everything was in order while all the rest of the members were away.
They all went together through the 'first' floor of the dungeon, which was just the entrance and not considered the first floor, but they planned to part ways after going there.
Why? The only way for them to get more powerful was to train alone and fight against beasts alone, without anyone carrying them around or saving their asses occasionally.
Aurora would be the only one in danger by doing that, considering she had to copy someone else's ability to have a better chance in combat, but that was a thing of the past! She discovered that her ability could work by touching any tissue from superhumans.