[@Dead Cruiser]
Any more general specifics on the nerf?
For now, I'm thinking what I'll do specifically is have Jen have the most trouble with Red magic applications, since the world around her operates on different rules of reality that she'll have to adapt to. And her state of "being a tiny universe" is not her current state, but instead what she is evolving into. For now, she's merely more an "elemental" of speed. As a result of her current state of "evolving", her mana is somewhat limited, since she's afraid to mess with the portion of it that's devoted to her body's maintenance until her body finishes stabilizing its transition.