Here are short, unique Jain girl names starting with M:

• Mahi — earth
• Mita — friend or well-wisher
• Meha — rain, cloud
• Meera — devoted or a beloved (often used in Jain contexts)
• Mansi — mind or thoughtful
• Mansiya — thoughtful one (derivative form)
• Mili — friendly, union
• Mina — precious, jewel (in Jain contexts often linked to value)
• Mitali — friendship
• Mansi — intellect or wise thinking
• Mani — jewel, precious one
• Monica — though common in broader use, can be distilled as “unique” in a Jain naming sense

If you’d like, I can tailor these to reflect Digambar or Shwetambar preferences and provide brief meanings from Jain tradition.