Well she does have thinning hair, but I can't tell if it's from scratching or from increased heat/dryness in the house due to winter coming on.
We don't have fleas here in Alaska.
I tried to get pix, and I can see light brown spots on her skin, but I can't edit the pix on my phone and unless you zoom in to the affected area you can't make them out. It's stressing her to try to take the pix.

Sorry.
I've looked up images of mange and I don't think that's it either. I do wonder if it's demodex or even dog lice. But this itching all started a few weeks ago when she'd had some boiled beef roast that wound up making us both sick. I have kept her on her Ultra Premium Natural Balance ever since to try to keep her tummy under control. So I'm praying it's just an allergic reaction or fungal infection.
Thanks again for your help.