I had a cousin with whatever disease this is. He was 12 or something when he died but looked and acted like a slow 2 year old. It was quite sad although he was a good kid.
RIP
They had those "old kids" on Opra some time ago. They had the exact opposite problems, they were 8- 12 years old but aged and looked like 50-70 year old dwarfs.
There must be something different between this case and your cousin's. I could see a single doctor missing the diagnosis, but apparently this little girl has been looked at by a number of doctors and they've never seen anything quite like it.
>>>I had a cousin with whatever disease this is. He was 12 or something when he died but looked and acted like a slow 2 year old. It was quite sad although he was a good kid.>>>
You should get your aunt and uncle to contact this family and their doctors. It seems they think she is the first and maybe they can compare medical records and help this little girl or someone else later.