Here are some beautiful Jain girl names starting with N and Y, with simple meanings:

Girl names starting with N

1. Nandita – One who is joyful, full of happiness
2. Naina – Eyes; also used for a loving, caring girl
3. Namrata – Humble, polite nature
4. Nishtha – Firm faith, devotion
5. Nidhi – Treasure; also used for a girl full of good qualities
6. Nirmala – Pure, without any blemish
7. Nishka – Pure, without desire
8. Nisha – Night; peaceful, calm
9. Navya – New, fresh, always progressing
10. Niyati – Destiny, spiritual path decided by one’s karma

Girl names starting with Y

1. Yashvi – One who is full of fame and good qualities
2. Yashasvi – Successful, one who attains good name
3. Yogita – One who is inclined towards yoga and spirituality
4. Yashika – One who brings fame and respect
5. Yogini – Spiritually disciplined girl, devoted to sādhanā
6. Yukta – Balanced, disciplined, right-minded
7. Yashini – One who achieves good reputation
8. Yamini – Night; also used for a calm and deep-thinking girl
9. Yashoda – One who gives fame; name of a caring motherly figure
10. Yuktika – Intelligent, one who uses right logic

If you tell me if you prefer very traditional Jain names (like from scriptures/virtues) or modern-sounding ones, I can refine the list further.