This is an example of what I'm talking about.
http://www.sujeet.com/
Down's Syndrome (DS) can be one of the most functional of all Developmental Disabilities (DD). A lot of DS kids grow up and have jobs, live on their own with minimal support, can get a long with just about anyone, and marry if they choose to, and any other thing they want out of life.
My neice is an adult with DS and works at a local University in the catering department, she has lived on her own in an apartment for some years, makes her own meals, plans her menu, does her own shopping, rides the bus or shuttle on her own, and her mom just helps her make her budget (Mom does check the checking account weekly to make sure nothing is amiss) and helps her to set goals and outcomes. I had one married couple I worked with and all I helped them do was make a plan for house cleaning. They hated it and refused to do it regularily. I had another consumer that had a beautiful little boy, he was perfectly normal and super smart. We had a helper for him when he started having regular homework and he had perfect attendence, good grades, and was always clean and well behaved. She knew how important it was for him to be at school everyday and on time.
I am a firm believer, and advocate, for the rights of people with Developmental Disabilities. I have over 12 years in the field working as a Habilitation Specialist, House Manager, Trainer, Case Manager, Trainer Trainer (I taught new employees how to do their jobs). My plan in College was to get at least a Master's in DD and be a Lobbyist for their rights. So many people with DD are pigeon holed and treated like they can't form solid thought by themselves.
I don't mean to be disrespectful or anything like that, it's a hard thing to come to terms with for a parent. Either this little baby has the genetic anomaly or not. This baby can act and look "normal" but still have the gene and the diagnosis.
There will be much support for this family, the school system's usually start kids with disabilities in school at 3, there are many agency's that provide services in the home from birth to school age, as the child gets older there will be more available to them. The mom will need to find an agency she feels comfortable with. We are a smallish town and within 50 miles of my town there are over 10 agencies providing services to individuals with DD. Some have been around since the 50's and some are less than a few years old.