If she has a Japan passport, she can.
The above is intended only as general information, and does not constitute legal advice. You must speak with an attorney to discuss your individual case.
With a Japanese passport, yes.
Samuel Ouya Maina, Esq. 415.391.6612 firstname.lastname@example.org Law Offices of S. Ouya Maina, PC 332 Pine Street, Suite 707 San Francisco, CA 94104