If I were going to do this, I would try using the Z scale on the chest and abdomen; if I were using the P4 female I would also use the droop morph on the breasts to increase the rise and fall of breathing. If I still wasn't satisfied, I would use some magnets to create the effect I want and save them as morphs. Another possiblity is to get Traveler's pregnancy morphs and use them to simulate breathing. They affect both the chest and abdomen. Good Luck Krel