You have requested a critique and i'm glad to give you one!
Vision - This art is well done and i see the shading in the picture. I think the vision of this picture is well done.
Originality - Can't say it could be better. I can tell that this is your art and your style.
Technique - Amazing. The tail and the ears and the face as well with the rest shows the emotion of the picture and many more.
Impact - This is a great impact. Shows the definition of the picture.
Overall - Did an amazing job. Keep up the Great Work!
sounds as if you don't know she used a lineart? however, I agree with it, though I would go with it to the owner of the lines instead of someone who just coloured it. Even the shading is the lineart-makers work.
I am just saying this since in what you said, it seems as if you thought it was her own art even through she said in the describtion that it was a lineart.