Is a divorce concluded if the wife asks about past matters, even though she conditioned the divorce on repeated questioning, and then he (the husband) retracted his agreement to her condition?

The conversation that took place between the spouses does not result in a divorce, for divorce is in the hand of the husband, not the wife. The husband did not speak with clear words of divorce nor with its allusions, and this is not giving the wife a choice or delegating the matter to her. So, do not question your wife again about these matters, and turn away from these thoughts.