I understand completely, Ken....I'm an LDNer, for almost 6 yrs now. I still have MS but, like your wife, on her med choice, I feel better and am able to move a bit better, too.
Having tried a couple (copaxone and avonex) to no avail, I will no longer use any of the DMDS, past or future. I'm comfy where I am, waiting for a cure..
Good wishes to you and DW..