Dear Jojo, I am terribly saddened to hear of your loss, this is always a huge shock coming after so much anticipation and hopes. I have had a lot of experience with mourning down here, so let me say that while your wife's reaction will inevitably seem a very hard thing, perhaps excessive by a foreigner's standards, it is normal for down here, and you should just let it run its course. Mourning here is a dramatic and deeply heartfelt thing, but the end result is that the catharsis is complete and thorough. Our neighbors in the campo recently had the same tragic experience, though with slightly different circumstances -- the baby was born, lived a few days, and then passed away. There was a funeral, dominican style, and for a while it seemed that the mother was inconsolable. However, the cathartic process of the funeral and the subsequent novena helped her considerably and she eventually returned to normal life. This was also in large part due to the tremendous support she received from family and the community. This is the wonderful thing about life down here, how everyone pitches in. You mention that your wife has just such a supportive family -- they will know what to do and will see her through it, and if the community pitches in all the better. I dont know your circumstances up there, but if it is a normal Dominican village, all of this will take place naturally. If you live in an expat community, then there could be significant differences, but the family is still the best and primary source of solace and recovery. It is a good idea to seek a specialist as a plan B, certainly, but the family will probably take care of it in the end.
Losing the child after six weeks is not an abnormal thing; my wife and I almost lost our child at this very juncture. I dont know about the obstetrics but Iknow that it is not uncommon in even the healthiest mothers. She can be made to understand this eventually and prepare for a second pregnancy in time.
My heart goes out to you, have patience, trust in the family. God bless. If I happen upon a good expert, I will send the info along.