Bobby traps were something Cora could understand. Witches, the evil queen and others had been to known to leave them in the magical realms. "Did I set it off? I did not mean to." Cora may have used a bit of magic to move the metal. It cam naturally to her when working on a difficult task. No different that someone's heart rate increasing when they worked hard. Magic did attract certain traps though.
Cora looked down and watched as her tail stretched apart and formed two human legs. The magic in her bracelet kept it from being painful. Juliet couldn't be comfortable with her tail on land. She looked up. "Are you alright?"