Here are some simple, beautiful girl names starting with “N” and their meanings (suitable for Jain families):

1. Naina – Eyes
2. Nandita – One who is joyful, happy
3. Nandika / Nandika – Daughter of happiness, pleasing
4. Nandini – Delightful, a sacred cow in scriptures, one who brings joy
5. Narmada – Name of a holy river, one who gives joy
6. Navya – New, youthful, fresh
7. Navika – New, fresh; also “a little new one”
8. Navita – New, fresh, ever-renewing
9. Naya – New, renewal
10. Nidhi – Treasure, wealth (can also mean wealth of virtues)
11. Nidhee / Nidhee – Same as Nidhi, auspicious treasure
12. Nikita – Earth, victorious, unconquered
13. Nimisha – A moment, instant
14. Nileshni / Nileshi – Related to Nilesh (blue – calm), peaceful one
15. Nimisha / Nimesha – Blink of an eye, very short moment
16. Nirja / Nirjaa – Lotus flower
17. Nirmala – Pure, spotless, without blemish
18. Nirupa / Nirupa – One who is unique, incomparable
19. Nirupama – Incomparable, beyond all comparison
20. Nirvi / Nirvee – Peaceful, without fear
21. Nishtha – Devotion, firm faith, dedication
22. Nishka – Pure, free from desire
23. Nishtha / Nista – Steadfastness in good conduct
24. Nitya – Eternal, constant
25. Nityashree / Nityashri – Eternal auspiciousness
26. Niyati – Destiny, disciplined order
27. Nupur – Anklet (sweet sound, gentleness)
28. Nutan / Nutanika – New, ever-fresh
29. Nivedita – Dedicated, one who has offered herself (to good values, dharma)
30. Nishika – Night, also “honest, pure” in some usages

For a Jain home, names like Nirmala, Nishtha, Nitya, Niyati, Nishka, Nirvi are especially nice because they reflect qualities of purity, steadiness, fearlessness and spiritual focus.

If you tell me your preference (short/long, very traditional/modern-sounding), I can refine this to a smaller, more focused list.