My wife and I had to abort out 3mo unborn child due to complications. Now my wife is very upset with me and I don't know what to do. How do I console her?

If the complications is due to the health of your wife, it’s understandable. However, aborting a child should be a couple’s decision and not solely your decision to impose. If this was not achieved, the repercussion is definitely not going to be a long term positive relationship with each other. The both of you will have a lot of mental struggles that had beget from all these. You will need to work harder to win back her assurance and relook if the both are ready to be parents. If natural conception is not workable, the other option will adoption. There’s a lot of babies out there who are waiting eagerly to be adopted. You and your wife will be the best doctor to diagnose the whole situation. Go seek a good family counsellor for help as this is a matter of the heart and you both wish to build a stable and strong family together. :)