What seemed like a big ugly issue when they had it, now seems really small and insignificant to them. They will often say that there was never anything wrong, it was just a mis-understanding. But for sure there is change happening, and it is advisable to record the state of affairs in writing along the way to show what has happened. If we don't keep the record along the way, the evidence tends to disappear. If we ask the client to give written progress reports, that will also provide valuable information for the facilitator that she might not have picked up on otherwise.
People express themselves differently in writing.
Sometimes they are more honest, sometimes they have a bigger overview, or it might be totally the other way around. What I have found useful is to use a form with two sections to it. The top section is for the client to note down what she has noticed she has gotten out of the processing so far, what has changed and improved. The bottom section is for the stuff that she notices has still not been handled or improved satisfactorily. Asking for both plusses and minuses encourages the client to be more honest, and it emphasizes that we are in the middle of an ongoing process of change.