If not Mange (i.e. if a skin scraping comes back clear) then this looks like Juvenile Cellulitis (a.k.a. puppy Strangles) practically confirmed if the lymph nodes start to swell. If it is Puppy Strangles, she is very old for it - they're usually around 2-5 months. But see that bareness and swelling around the eye? Looks like it...
We just went through this. My pup is still on Prednisone. We just began the taper this week. The good news is, if it is something like Strangles, the treatment is cheap.
Here is a link to my thread. My puppy is almost 100% now. The pigment is coming back around her eyes, and hair regrowth looks very possible. She had it bad around her eyes and not much on her muzzle.
Any Idea What This Is? (Pics)