my ears were burning...
welcome to the site C, and sorry to hear about your mom.
there are some pretty standard and well documented sub-optimal nutrient conditions in both bipolar disorder, and multiple sclerosis.
a friend of mine has a bipolar diagnosis and was hospitalized in spring of 2005 and 2007. she was not hospitalized in spring 2009. this year, she had been living with me and i encouraged her and reminded her to take vitamin d3, fish oil, and b-complex, and get plenty of exercise.
smoking in particular can impair a person's zinc status, which is lower in ms patients anyway. having low zinc has a number of trickle down effects on other things, such as uric acid status (also low in ms patients). zinc is important for a wide variety of normal body functions so the low status in ms results in problems all over the body, from the eyes, to the permeability of the intestinal wall, to the blood brain barrier, it just goes on and on.
may i ask why your mom is on coumadin? just curious about the reason she's on blood thinning medication..
if you can request some bloodwork on a few of the nutritional 'usual suspects' for ms, it would be a good starting point. these include: b12, d3, uric acid, zinc, and selenium. you could also try to get a PUFA test (polyunsaturated fatty acids). i would probably throw in serum ferritin too. and vitamin E (that's important for position sensory - i lost that for a while and did a big vit E push (with tons of b complex) and my position sense came back, whew!)
i am not going to suggest that disability progressed as far as your mom's and for this long is reversible with nutrition, because the earlier you address these kinds of problems the better the recovery will be. but, you may see some improvement, and by getting her into tip top shape from the nutrition angle, she'll have the best foundation for the future.
hope that helps, and if you have any questions fire away