(Here is 1 of the 4 pages of a sort of encyclopedia of the different possible forms that Xenia may have in her eldritch form, straight out of the Necronomicon book.)

This Yidiolthoth Form, aka Xenia Talbot, will be her wild form, being that she still has a humanoid appearance, but being influenced by anger.

Her human appearance changes for this deformed body and becomes more and more monstrous, as long as she does not control these emotions and lets guide by her side Eldritch.

Like a wild beast, it will attack its enemy with all the rage and violence to incapacitate its prey.

Her whole body becomes a weapon that can kill and be modified at will.

Art https://www.furaffinity.net/user/kanashitoki or https://www.deviantart.com/k4n4shtoki
Original pic : Commission: Xenia ( eldritch form 1) by K4n4shToki on DeviantArt