Here are some beautiful Jain-friendly girl names starting with S or Sh, along with simple meanings (all meanings given in a Jain dharmic / Sanskrit-Prakrit sense):

Starting with “S”

1. Siddhi – spiritual accomplishment, attainment of highest purity (siddhahood).
2. Shuchi / Suchi – pure, clean, internally and externally.
3. Shrutika – related to śruta (Jinvāṇī / Jain scriptures), one who loves sacred knowledge.
4. Shrutashi / Shrutashi – absorbed in Jain scriptures, lover of true knowledge.
5. Shreya / Shreyaṃsi – auspicious, that which leads to spiritual welfare.
6. Shreyansi – one who follows the best (śreyas) path, the path to moksha.
7. Shuddhi / Shuddhika – purity; one whose soul tends towards becoming karma‑free.
8. Shubha – auspicious, virtuous, bringing good qualities.
9. Shubhangi – one with an auspicious, graceful personality.
10. Sanjñā (Sanjna) – right understanding, spiritual awareness.
11. Suprabha – very bright, filled with inner light of right faith.
12. Sumedhā – good intellect, right thinking aligned with dharma.
13. Suvrata – one who follows good vows (vrata), like small forms of the Jain vows.
14. Sadhna / Sādhanā – spiritual practice, disciplined effort on the path.
15. Sanyamī / Samyami – self‑controlled, one who practices saṃyam (restraint).

Starting with “Sh / Śh”

1. Shanta / Shāntā – peaceful, free from anger and violence.
2. Shantini / Shantinī – one who embodies peace; related to Shantināth Bhagwan.
3. Shalini – modest, disciplined, with good conduct.
4. Shashiprabha – moon‑like radiance, gentle and calm light.
5. Shravani – related to śrāvaka/śrāvikā (Jain lay follower), or one who listens to Jinvāṇī with devotion.
6. Shravikā – Jain lay‑woman (directly a Jain term, very meaningful).
7. Shrutadevi / Shrutādevī – goddess of scripture, one devoted to Jinvāṇī.
8. Shubhrā – bright, spotless, pure.
9. Shriyā / Shriyā – auspiciousness, prosperity in the sense of good qualities (guṇa‑samṛddhi).
10. Shuddhā / Shuddhātmā – pure soul, or one moving towards soul‑purity.
11. Shreyashī – spiritually successful, progressing on the path of liberation.
12. Shraddhā – deep, firm faith in Jain Dharma and Arihant–Siddha.

Names linked to important Jain women / ideals

1. Trishalā / Trishlā – name of Bhagwan Mahavira’s mother, very revered in Jain tradition.
2. Priyadarśanā – one with loving, gentle vision; also used in Jain texts for noble women.
3. Siddhāshri / Siddhāśrī – glory of the Siddhas; one who reveres the liberated souls.

You can choose any name that you like the sound of and whose meaning you feel connected to. All the above are fully in line with Jain values like ahiṃsā, saṃyam, shuddhi, shraddhā and moksha‑marg.