I'm going to say yours is a pastel pied Tyler. It is a little on the darker side, but it does have the characteristics of a pastel pied. As John said, the pattern is there, the faded head is there, the color it does have is more yellow. Pastel pieds do indeed brown out like any other pastel does.
It does take time to acquaint yourself with the different pied morphs, but once you learn "the look" it becomes much easier. Your girl has the Pastel Pied "look" to her. Maybe she isn't the most amazing example, but I suspect she is indeed a pastel pied.
Gale