I have the closed Martelli ring with the notch, and am able to slide it through the presser foot area because the presser foot mechanism can be lifted slightly to allow for this (Handiquilter Sweet 16). Martelli also now makes a version of the ring that isn't a ring, but two separate pieces with the gripper material that you hold in the hands separately (I haven't tried this). I would not be able to quilt at all without my ring because of hand issues, so am very thankful for it. Is it possible that your friend's presser foot mechanism can be lifted slightly to remove the ring?