My mother-in-law seems to have gotten worse. It is getting harder and harder to deal with her as she 'doesn't want to be taken care of' and doesn't realize what is going on. Should the MMSE test be given again, and if so, how does this help with her care?
If you need that information so that you can plan her future more appropriately, then I would have it done. If you already know, as I do, what your plan is when she becomes too much to care for, then I can't see the value. For me, it would be just another reason to haul mom to the doctor's office and spend a half-day.
After I had thoroughly investigated options, I have to say a kind of peace settled over me. When you can say, "Well, when THIS happens, we plan to do THAT," I think you'll find the same thing. Once you've got a plan in place, it simply becomes a matter of when you pull the trigger. How fast it's happening, at least in my case, doesn't make any difference.