Alchemy was the realm of creators, the realm of geniuses. Sorcerers were all on the path to seeking truth, but everyone's path and truth were different. Only alchemy, which represented "creation", was closer to the general truth.
And the mechanical armor was a masterpiece conceived by her and Hydral, two geniuses among geniuses. There was no one in the Etheric Academy who could reach this level of design and creativity. Moreover, they hadn't started researching it immediately, but instead used it as a tool to suppress the Tower of Babel... It would be strange if they could figure out what the mechanical armor was all about.
However, it was also possible that the Etheric Academy had already secretly set up an alchemy workshop to research the mechanical armor, and what was presented here was just a smokescreen and obstacle to annoy the Tower of Babel.
Ravenna didn't let her disgust for the Etheric Academy affect her thinking and judgment.
