Canwest,
I'm sure it's very frustrating to have received the extra requests.
With regards to the extra info because of the late birth registration. I can understand them asking for the school records etc. I realize you tried to circumvent the problem with the afadavit from her mother witnessed by her aunt but these are the same people that registered the birth late. It seems they want independant corroboration - especially when the baptismal certificate was also later in life.
It seems the request for the IMMH10a is new and has been requested from other applicants prior to the visa being issued. On the bright side they asked for both things at once rather than waiting until your wife has supplied the other information.
It seems that there are some new measure put in place at least with Haiti that we were not seeing even a year ago. Perhaps it is due to the length of time it takes to complete the applications that they are requesting a new declaration regarding children.
There was some recent news of a Canadian woman finding out that her Dominican husband had been living with someone in the DR and had children - but he lied on the application. Not that this form prevents people from lying if they are going to but maybe it's just a way for the government to say that they checked. Lord knows that in the length of time it takes them to complete applications you could have a baby.
On the bright side someone is looking at your wife's file and is asking for more information. It means they are working on it
Hopefully your wife won't have issues getting the requested school documents. Another poster had the same request for his wife. However, the school had had a fire and the records destroyed. It took him a while before he contacted his MP to help - so just some advice if the records are impossible to come by don't hesitate to get your MP to help resolve the problem.
Good luck!!!