Ma maatra bhako bhae yinlai aankhaa chimlera nagarikta dinthe. Priti ko kura sahi ho, unle bharatiya nagarikta tyasai chhodnu hudaina, pahila Nepali nagarikta waa parichaya patra paaepachi maatrai bharatiya nagarikta sota badar hunchha. Natra ahile bharatiya naagariktaa chhodeko khandamaa "na gharko na ghaatko" hunchha.
Yes, logically, she needs to wait for 7 years if she wants to apply for Nepali citizenship based on marriage. She can get an identity card and possibly a passport based on the ID card if she applies for an ID card and then for passport. But she should be allowed to apply for the ID card, then her Indian citizenship will be invalid automatically.