Here are some Jain girl names starting with S:

• Samyakta — right faith, true understanding
• Shubhi — auspicious, pure
• Siddhi — spiritual accomplishment
• Sadhvi — virtuous, disciplined woman
• Sarika — sweet-voiced, graceful
• Sanjana — gentle, well-behaved
• Suhani — pleasant, charming
• Saanvi — sacred, devoted
• Saumya — calm, graceful
• Shreya — auspicious, excellent

If you want, I can also give:

• modern Jain girl names starting with S
• traditional Jain names from scriptures
• short and unique Jain girl names with meanings