I didn't have time to check back til just now - to read my post as simply a yay or nay for LDN is to miss the point.
LDN did not work well enough by itself, accomplishing symptomatic relief but not good enough labs and she still had to get that monthly B12 shot because she couldn't seem to absorb it no matter how high the oral dose (she has been on LDN since 2009). It was only when Pentasa was added to LDN in 2011 that we saw not only continued symptomatic relief but also labs that immediately improved and now are completely normal.
Given the horrors experienced every time my daughter tried to go off any med including LDN and after the hundreds, maybe thousands, of hours I've spent looking for signs of true remission in clinical trials or from HW comments I suspect true spontaneous remission without meds or diet might be a fairytale...it has been six years, now, since she was diagnosed, and not once could she go off a med. Right now, she's not just on one, but two, meds so in this case, spontaneous remission is highly questionable, to say the least.
It could, however, be pointed out that because she didn't try the Pentasa without the LDN, maybe the remission is all Pentasa...although it's a weak med that many docs won't even bother prescribing. She could try going off LDN to see what happens but won't, particularly because the LDN also seems to act as a prophylactic, at least for her, in warding off viral and bacterial infections.