I googled your girlfriend's new diagnosis, and it says the condition is hereditary. Does she know if anyone in her family has it?
My daughters do not not have that specific condition, but I just want to say that we have used "alternative healthcare", even advanced levels, to deal with chronic illness, grief, trauma, neurological & brain issues, etc. Of course these treatments and therapies are out-of-pocket expenses, but they fix complex problems naturally without medication & medication side effects. I am so grateful to God for the "miracles" we have experienced, and I pray that your girlfriend will also be healed! I praise God for the "good work" He is doing in her now and will do!!