You are one lucky lady- the fact that you have been relapse free since 2008. Unfortunately, we MSers can’t escape the flying bullets indefinitely, so you have done very well. My last relapse in June this year was pretty similar, but affected my left side and was accompanied by severe muscle spasms and spasticity. It was hell on Earth and lasted until mid August!
Thankfully, it now seems like a really horrible nightmare that has now passed. I am pretty much back to normal and have now returned to my running. I’m almost normal as I run and no one notices that I develop a slight drag as my leg gets fatigued. In fact, I can still run faster and stronger than some non MSers.
So, in short, there is no reason why things can’t return to normal or as near as damn it!