Sad as this pool is, Momiji could easily free herself. All she'd need to do is raise her arms up and to the right of her head, then unbuckle the restraint with her teeth. From there, it wouldn't take much to get the two of them the rest of the way free, at least from what can be seen of the restraints. There's a chain behind both of them, but you can't really tell where they lead. I mean, come on. Were they even trying, or did they want to see what happens when you corner a wolf?