You could consider having a nipple reconstruction (using a local flap technique) and areola tattooing to improve your outcome following your previous surgery.
In your photographs, it seems that the area is not demonstrating so-called rejection, but perhaps a superficial suture which has become infected or just inflamed. These are usually dissolvable sutures. You should show this to your plastic surgeon. If the suture can be identified and easily...
Thank you for your question. Removing skin at the lower pole along the breast crease can help lower the nipple position and tighten the lower pole. Be sure to consult with an experienced board certified plastic surgeon. Good luck.