Wow, you have been totally Frank here with the situation and we would be hard pressed to say this is stress and not something else, or vice versa.
The internet is a wonderful tool - it brought you here where you can get straight advice and information, but it can also be a dangerous place full of pitfalls.
The best I can tell you is that one week is a very short period of time to wait to see a neurologist. Most people wait a month or more. The other part of that good news, if it can be called that, is MS is a very slow moving disease and there is no panic to see a doctor, like there might be with another disease like cancer.
Her symptoms could be neurological but they could also be stress. If the doctor is seeing hyperintensity flairs on her mri, good for them to investigate further. These spots can come from a number of things, including MS, migraines and ishemic events. There are even some people who have these from trauma at birth.
The best thing you both can do right now is learn more about MS and the exam the neurologist will do. We have great health pages here that put everything into very understandable terms.
You can find our health pages at
http://www.medhelp.org/health_pages/list?cid=36
Whatever you two do when the neuro appt time comes, do not mention that you have been looking on the internet - that is the quickest way to be dismissed by the doctor.
Unfortunately MS is a diagnosis of exclusion - there are a lot of things that mimic MS and they all have to be eliminated as possibilities before the doctor will call it ms. For most people, that involves months and months of testing and waiting. It wears on the nerves, but you don't want your wife to get the wrong diagnosis.
And please tell her for me that if it is MultipleScleroris, it is not a death sentence, or even being confined to a wheelchair in the near future. The treatment of MS has advanced so far and there are new treatments coming soon that will make a world of difference.
We're here to answer questions as you think of them - feel free to ask.
be well, Lulu