Strzok was dismissed from the Mueller investigation in June 2017. I guess Lisa didn’t want to have any connection linking them or disclosing damaging information. Closing the barn door after the horse escaped.
An important point. We are told by the MSM that Mueller dismissed them immediately as soon as he read of their sexual affair and anti-Trump comments. But if Mueller read their messages, he would have clearly seen, as we do, the outline of the whole phony Russia conspiracy. That Mueller continues to ignore this shows how biased and corrupted he is.