The bullets and Aiden's attacks were registered by the twins, seeming to teleport before he could actually register a proper shot. As for the shield, before her eyes, the twin attacking Silvi disappeared infront of her shield after the impact, which sent her flying. That was when she got laid out by the twin appearing behind her and using the force of being sent flying against the girl. 

Meanwhile, mika kept fighting the one against her, unable to actually get an attack off, but surprisingly the teacher couldn't hit the girl either. And it truly was an impressive sight to behold, until it stopped being impressive and the girl began getting hit constantly, the teacher landing punches on her constantly, throwing a heavy punch and sending her flying, knocking the wind out of her and sending her down the block, disappearing from sight.