Peridot grimaces as Rita and Yuya go hurtling to the ground. She'll have to remember to thank them for the save later, assuming they get out of this mess.

With the Mother's focus still partially on her, getting to the front of the chassis is difficult. Turning into a dragon might give her the extra power she needs to stay latched on, but it would also make her a bigger target for swatting. The bat might be agile enough, but a single blow could turn her into a fuzzy green pancake. She already found out that using her elemental form is a terrible idea.

That kind of just leaves her with one option.

Scampering for her life, Peridot traverses the perilous landscape of the Mother's chassis, scrambling up over her humanoid shoulder and skidding down her metal tits with the hilt of the vorpal sword grasped firmly in her tail. It's not graceful, or even remotely cool looking; her movements are clumsy and frantic, and she's basically yelping and just trying not to die the whole way, squawking as she careens off the slope and haphazardly whips her tail down towards the wrist of that arm, letting the sword fly. She's going to add a little extra encouragement for taking that hand off of Syr. Maybe a vorpal blade strike to the wrist will do the trick.