Unlike Gary, the other Werewolves, when evolving into their new class, they didn’t have a system that would explain every detail of what they were capable of. A lot of what they had to go through would come through instincts.
When in a tough situation, their minds acted on their own, and their bodies reacted to it. In some cases, it was as if they had always known how to do something and were acting out on that fact.
This was how Marie knew she could grow in size. She knew she had the strength to defend against the attacks that were coming her way. In some cases, there were more difficult powers unlocked by classes that one wouldn’t know about.
For instance, even Gary’s Dark Warrior class, the main advantage of the class wasn’t figured out until nightfall came.
Having watched Marie do so well, it was time for Olivia to act as well. Her body was changing, and she was going into her full transformation. For her outward appearance, she looked similar to how she did before.