She keeps attacking for as long as she can, but this is iron that she's trying to control here. Peridot keeps her grip on it until her soul can't take any more, and she all but blacks out from exhaustion and the spiritual pain.

Unfortunately, that means she's nowhere near aware enough of her surroundings to avoid the Mother's hand when it comes around to claw at her own chassis. It basically bludgeons her in the process, slapping her off and sending her rocketing all the way down to the floor where she lands in a heap. She is definitely in the line of fire for those flailing limbs.