As someone who just found a rather incriminating letter from another W to my H which he vehimently denies holds any truth I would like to just say that I too have been acting like your wife. Seeming fine one day then back to questions, questions, questions the next. It is because you talk about it and your partner answers your questions and you feel a little better, then, when you're on your own you run through the answers in your head and think of ifs and buts and then have a load more questions you want answering. I'm told it stops eventually. Be patient is all I can say and keep answering her questions.