Hello tikiberry and welcome to our community.

I am so sorry that your daughter is having these symptoms and that you are having trouble getting some answers. Unfortunately many conditions that affect the nervous system can mimic MS, including nutritional deficiencies, endocrine disorders and toxicities. That makes diagnosis of the cause of neurolological symptoms difficult so quite often a few are given until the correct one is found.

Here's a shot in the dark though:
You mention that your daughter has some mitochondrial alterations and is also diabetic; so I'm wondering if she is consuming Aspartame.
A small percentage of people (more so in children), are very sensitive to Aspartame and/or its metabolites, and even with ingestion of small amounts may develop symptoms like the ones that you describe.
It might be worth checking it out.

Here's a link:
http://voices.yahoo.com/aspartame-po...oma-38555.html
QUOTE: "The symptoms of Aspartame poisoning are known to mimic Multiple Sclerosis, Lupus, and also Fibromyalgia (spasms, shooting pains, numbness in your legs, cramps, vertigo, dizziness, joint pain)."

Hope that you get some answers and that your daughter overcomes her health challenges.
Please keep us posted.

With love, Erika