That's dumb. The noose is "fake" and not carrying her weight, rather her body is suspended by a harness beneath her clothes.
It's how they do it in theater and magic tricks or even films if they want to avoid CGI or other camera trickery.
Love the detail of Makito-in-disguise tying the girl's hands together with the palms facing the same direction. Makes it a lot easier to slip your hands free, so hope we'll see that next chapter.