This is an extra that shows the arm, legs, eye and mouth in detail, along with a size reference of this different shape compared to a human, just to give you an idea of the difference.

As you can see, she can modify her body into a weapon, much like Canarge, a villain in the universe of Spiderman and Venom. This shows that she has a partly polymorphic body, depending on how far she exploits these abilities of eldritch abomination.

This allows you to see in more detail what his body went through as a transformation into becoming a half Eldritch abomination.

Art https://www.furaffinity.net/user/kanashitoki or https://www.deviantart.com/k4n4shtoki
Original pic : Commission: Xenia ( eldritch form extra) by K4n4shToki on DeviantArt