That's what Katie is trying to say from behind the ballgag. That a reverse prayer is bad enough with ropes, with chains it's even worse. It hurs, and it's going to leave marks on her soft and young tender skin. And her legs pulled up into a chain frogtie.
She struggles .... she has to, she wants to get loose before he returns - if he did this to her what would he do next? She didn't want to find out.... ...