Importance of ossification test?

a girl is more than 18 years but her parents has changed it and she is now 17 yrs and 6 months according to the changed date of birth and she does not have any aunthetic proof regarding her original date of birth and has eloped and married a boy whom she loved.the parents of the girl has filed a case under section 366 ipc on her husband because the boy belongs to the schedule caste community.How she can save herself and her husband from this trap and can she file a case in the court 0r not?