I believe she is a Walker. In my experience, Beagle, Harrier, and Foxhound ears are all parallel to the face. Walker ears tip in to the face like they want to spiral when the hound is relaxed, the same way hers do. You can check those google images and take a close look at this detail. I have yet to see a pure foxhound with ears that tip in like her do.
Incidentally, the Harrier is one of the rarest breeds in the US. When I hear hoofbeats, I don't look for Zebras.
And, she has a very pretty face.