Hi Laura,
Glad to hear you are giving your sister the CNS/PNS formula. May I ask how much you are giving her? The reason I ask is that I have a friend who went to Hansa and her ammonia levels were so high that Dr. Jernigan gave her 30 times the recommended dose for a couple of weeks (I don't recommend you doing this without a doctor). Her neuro problems were really bad and her liver was shutting down from all the ammonia. My friend couldn't read, put words together (in her mind and when she tried to talk). She was so agitated she would take a branch and keep hitting a tree. She was a basket case and she has been cured (healed) for many years now.
Another supplement that would be good is Silphitrin (in the ACV base). You can read about
that below:
hansacenter.com/wp-content/uploads/2013/08/Silphitrin.pdfDenise