Here's the next Poser render; I have started adding the morphs in the head that I think will be needed and several have been used on this figure to give her some expression.  She looks annoyed or scared, either way it might be best to keep a distance...

There are now morphs to lower the upper eyelids independently, and blink morphs which move both eyelids to bring them together.  More morphs can vary the length of the horns, flare the nostrils, raise the upper lip, lower the lower lip; these can be used to expose the teeth without using the lower jaw's movement.  There is also a morph to raise the corners of the mouth which combined with exposing the teeth using the upper lip morph gives her a silly smile.  In common with some of the other morphs that one can be set to a negative value to lower the corners of the mouth.

I should mention that the inside of the mouth needs work, as the texture is simple plain areas of colour and there are no features on the bump map for the tongue.  Naturally I do intend to texture inside the mouth properly.