Why would her structure let you tell what she is?
When you see her in the flesh
All breeds of terriers come in all different builds is the point i'm making, my russel would probably make your bitch look like a whippet in comparison and i've seen short stocky pats built like brick shithouses, even some where the legs are bowed a bit, some that look like beddy's and some that look like staffs so there's no way the structure of a dog will give its breeding off imo.
Bonny looking bitch though