When Myka and I "remembered" new things, we did so at the same time; we thus had the benefit of coping with them together instead of having to explain things. There were things in those memories that we acted on to try to avert possible tragedy. It also gave us an opportunity to explain some things to each other.
Perhaps ask the other parties in those memories if they would wish to know or not. Let it be their decision to know or not know. Trying to keep it secret to protect them may well backfire.