If at all medically possible they would like to remove the deceased baby and this depends on how far along you are in the pregnancy,they don't like leaving a dead fetus in the body,I never heard of aborting one usually that is when one is still born, I'm not a medical person so I hope this helps you somewhat....the best to you..... As I stated if you are far enough along they would more than likely put you into labor and allow the surviving twin to be incubated in the hospital,but with all the new technology they have now they may have a way to remove the deceased baby and save the other twin,as they now can operate on a baby while it is still in the womb which gives it a better chance of healing even before birth...