While Walker and Ignus dealt with all the fire mana that Remey had released, she was within her own head. Making sure that she followed every single step.
If they could only read her mind as she went through this process, they would know how much she hid from them.
"That guy said this was the best way to make a pure flame core. That I should make a pure flame core and not a fire core or anything else. But he also said I could try to make a true flame core and be better." Remey's mind shook slightly as she thought this to herself.
Not because she was told not to make a true flame core, but because the origin being that had told her what it thought best was the pure flame core. But the true flame core was stronger. It was also well within her grasp. Just a challenge to overcome. Why would she let that get away from her?