Here are some Jain / Sanskrit-based girl names starting with “S” and their simple meanings:

1. Shravani – Related to the holy month of Shravana / listener of scriptures
2. Shreyansi – One who leads to welfare, auspicious
3. Shreya – Auspicious, bringing goodness
4. Shrutika – Related to Shrut (Jin-vani, scriptures)
5. Shrutika (or) Shruti – Divine message, sacred knowledge
6. Shubhangi – One with an auspicious / beautiful body
7. Shubhika – Auspicious, fortunate
8. Shalini – Modest, polite, virtuous
9. Smriti – Right remembrance, memory
10. Suhani – Pleasant, joyful
11. Supriya – Very dear, greatly loved
12. Siddhi – Spiritual accomplishment, perfection
13. Siddhika – One who grants / has spiritual success
14. Simran – Remembrance (of the Lord)
15. Shanti – Peace
16. Sarika – A sweet-voiced bird, melodious
17. Sarita – Flowing like a river
18. Sanskriti – Culture, refined way of living
19. Sanyamita / Sanyami – One who has self-control
20. Saurabhi / Surabhi – Fragrance
21. Sakshi – Witness, observer (of the soul)
22. Saumya – Gentle, calm
23. Shraddha – Faith, devotion
24. Subhda / Shubda – One who speaks auspiciously
25. Swara – Musical note, pleasant sound

If you tell me if you prefer very traditional Jain names (like directly from Jain scriptures) or more modern-sounding ones, I can refine this list further for you.