Miranda had no choice but to go this far if she truly intended to one-up them the way she currently was. After all, the men and women seated in this hall had hundreds of millions to even billions of years more experience than she did, and this wasn't a situation that could be handled by raw power alone.
Sure, power played a significant role in forcing them to quiet down and not try to pressure her. It also helped her pressure them and deter them from acting out without fearing the consequences of her retaliation.
Still, she couldn't deal with this matter with raw power—at least, she didn't have that much power to brute-force everything.
If she had tried to handle everything through raw power alone, things wouldn't have gone nearly as smoothly. After all, while Miranda was stronger than most of them individually, if they had chosen to band together against her, she would've found herself in quite the pinch.
That old saying—there's strength in numbers—didn't exist without reason.
