Just curious as to why you wash her feet out every week.
It will be an uphill battle with thrush until you correct, as much as you can, any structural issues. Having clean, dry footing really helps. There are lots of threads on hear dealing with thrush.
I can't tell too much from those pictures, except to agree with Poppy. Also, are you sure her frogs aren't just shedding?
I would make sure her diet promotes the growth of healthy hooves. There are several threads on that, as well.
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