She is indeed moving forward in a ghoulish way.
There is a post about the concept and shape over on the Facebook page, I'll post it here.
"I don't normally show the concept art, as it's usually my own hellish scirbbles. However The Ghoul Queen has beautiful artwork by Kate Evans (Red Maiden Art) , so I thought I would take you through it on this cold Monday morning.
Concept art usually differs from the finished pieces to several degrees. There is usually a lot of tweaking afterwards – for stylistic reasons, or practicality.
The biggest reason for change is that a drawing may look AMAZING, but would struggle to work as a figure. OR it could work, but would require loads of pieces, and nobody likes assembling a 28mm figure in more than two parts.
Kate did a life study for this one to get the body right, and the pose was the most important part. I gave her a brief of the style which included examples of male ghouls from various companies, as well as my usual "what not to do – examples of weird sexy monsters". I really wanted her to be doing a grand lunge. She was designed to be on foot as well as atop a monster, so I wanted her to be creeping forward in a very "battle cry" leader pose.
Once this artwork was complete, I then send it to the sculptor, Andrew May, with some notes and ask if there are any issues he sees there. So we knew it would be two peices, and being resin, is no problem (metal multi part figures are more of a pain for a few reasons).
My interpretation of the artwork was that she needed to be "grottier". So the teeth were enlarged and sharpened, and the hair made more ragged with bald patches. A leg was lowered to give the figure more stability and the fingers thickened to survive casting and gameplay. The bone was added into the hand to make a good pointing gesture, like she is on top of a high spot (monster or cliff) initiating cheering, or perhaps directing a charge."