Quote - By looking at Roxie's face , I wonder, if she has been modeled by using the Poser Pro Redistributable figures as wall. Their faces  look kind of similar to me.

 

The base topology and the UV mapping tells me they are based on the same mesh. Then send it to zbrush and hide the head. Look at the inner mouth teeth and gums. These are the same models. 

It's not difficult to rebuild topology in various areas and keep the same UV mapping. You can freeze borders in Blender's UV mapping by pinning all the edges and relax the rest of the mesh, making adjustments as necessary. I'm sure other UV mapping tools can do the same thng. 

There's nothing wrong with using extremely low poly meshes, under 10k. Except that you're not going to get the same level of anatomical detail as you would with a higher res mesh, at least not everywhere. It becomes much more apparent when the figure is posed. Basic walking and standing poses won't show what it's missing too much. But stretch her out across a stool with her back arched and her arms splayed out or have her doing yoga-type poses and the lack of detail becomes immediately obvious. Plus the face. 

But if you want to build lo-res game meshes, circa 2000-2004, which is exactly what the figures here look like, then it's a decent mesh to start with. 

 

~Shane