Eating weird things is called "Pica" It is probably her attempt to find something that will help the way she feels. It is possible to live with some forms of seizures, but it is scary to watch, and also there is the worry about what is causing them.
Forgive me for asking this, but the pharmacist who is helping her with the alternative medicines does definitely understand how these medicines can be used for dogs? Herbs, for example, are not all suitable for dogs even though they might be the right herbs for the ailment, and would be great for many Humans. If there were any toxic reactions, they may cause extra symptoms?
I do so wish I could be a greater support, but I don't have much experience of kidney failure in dogs. I do hope someone else comments who HAS had similar experiences and may be able to offer some advice.
Your poor girl! All I can ask for is you can get some help here. Why don't you look through the archives? I seem to remember some posts a little while ago where good advice was given in the management of kidney failure.