All the formalities and decisions related to the board exam including the form filling are the discretion of the school or the affiliated board itself. Other than them there is no authority who can facilitate board exam form filling once the dates have passed.
However, in genuine cases and emergency situations the schools can take the case forward and accept late forms. You will have to talk to the school authorities and explain them your situation. If there is a need, you can also contact the board and tell them your problem. They will listen to your case as a student's career is at stake and there is a good chance that your daughter will be allowed to fill the form and appear for the exams.
All the best!
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