Wonderful. By persistent, strong massage ( heavily crushing the breasts and pulling them downwards) you can accelerate her sagginess. She will be already much more pendulous within a year or so, especially if you also tightly bind the breasts for long periods, so that the breast tissue weakens and becomes always floppier. However, your wife will become more splendud as she enters her 49s, then 50s, znd her breasts dangle uncontrollably down her belly. It is you duty to prepare her for this.