A girl child is eligible for an SSY account only if she is a resident Indian citizen when the account is opened and remains so until the maturity or the closure of account.
Non-resident Indians cannot open an SSY account. In fact, if you or your child's residential status changes to non-resident or she takes up another country's citizenship during the term of the scheme, no interest shall be paid from the date of citizenship or residential status changes and the account will be considered closed.