This could be blamed on William's Beast Slayer Title, but Carl didn't know nor care what the reason was. He pulled back his summon before the lightning could burn it to a crisp, standing back while Tia jumped forward.
He took time to recover with several of Yuming's Pills as Tia jumped forward and used her fist to disperse the remaining power of the Seventh Lightning Bolt. At the same time, her stone-reinforced fist was pierced through by the Lightning and cracks spread down her forearm like a snake slithering through mud.
The Lightning Bolt's lingering effects continued to ravage Tia's body, scarring and blistering her entire fist and forearm until it was hardly usable. In a World without Cultivation, it would be hard to say whether it could still be amputated, but a green glow surrounded the damaged arm and started reversing the most life-threatening effects.