A Taken in Hand relationship does not need to be put on hold because of stress in your life. In fact, that is exactly when the relationship needs the man's strength the most.
Your wife might decide that she does not want to obey or submit or whatever. However, it is very helpful to her to stay in charge and keep her in hand.
Otherwise, she has the added stress of having to keep herself in hand and, perhaps, taking on some of the dominance of the relationship.
Yes, it is difficult, but it is part of your role. You are providing stability for her when the other parts of her life are unstable.
So, if the dog dies or if you get fired or if your mother in law does... whatever... use your moments of discipline as a change to get away from the stress.
Focus her thoughts on you and her relationship with you in order to distract her from the outside pressures. She may rebel but that rebellion might really be a form of “acting out” caused by the stresses. Rein her in but make sure she continues to know that you love her.