TheStrawWitch on DeviantArthttp://creativecommons.org/licenses/by-nc-nd/3.0/https://www.deviantart.com/thestrawwitch/art/Beth-and-Roland-Arm-Wreslting-434306707TheStrawWitch
Not entirely sure how you wanted this done, but here it is. Beth can use her shapeshifting ability to stretch her arm out, can't she? That's a thing, right?