oh, ladytrails, you wound me! I think walkers have some of the most expressive faces of any breed I've seen. Those big noses, large, glittering eyes... Ok, ok, I'm biased :P
As for the mare...I'm not sure many non-draft horses would have feathers like that. It's possible, I suppose, but I'll bet she has such feathering because there's draft blood in there somewhere.
It would really help to see a video of her movement, as that can tell a lot about what gaited breed she is.
Based on looks alone, I'll say either Walker or Paso, but not full-blood.
We drink to our youth, to the days come and gone; for the age of oppression is now nearly done.