The trouble is that often people don’t necessarily present with symptoms that ‘look’ like MS, so they get missed. Other times, people have what looks like MS, but isn’t.
MS can be quite tricky to diagnose, which is why there are so many people on the newly/un-diagnosed forum in what we call ‘Limbo’.
So while it seems she’s missed the boat for DMDs, at least each time she’s relapsed, she made a good recovery. That could be seen as a good thing as she’s not lived the last 3 years ‘with MS’. What I mean by that is she’s lived a normal happy life, albeit with times when she’s had relapses. I had 5 years when I was having relapses but had been wrongly told I didn’t have MS. When I found out the truth, that the doctors had made an actual outright decision not to mention MS to me, initially I was furious, but later saw it as a reprieve. I’d had a few more years of living without the worry of an MS diagnosis.
Hopefully now she’s free of potentially disabling relapses, she’ll reach a kind of plateau where nothing much changes.