Here are simple and respectful ways to greet a sadhvi (sadhvijī):

• Start with a gentle Namaskar or Jai Jinendra. Fold your hands in front of your chest and bow slightly.
• Do not touch the sadhvi’s feet. In Jain tradition, reverence is shown through folded hands and a gentle bow, not by touching feet.
• Stand up respectfully when she enters the room, and keep a calm, courteous demeanor.
• If you give an offering or share a meal, present it politely with both hands and a brief respectful greeting like “Namaste” or “Jai Jinendra.”
• Address her with appropriate honorifics. In many cases, “Sadhvijī” or “Sadhvijīma” is used; some communities also use “Sadhvi Ma” or simply “Mataji” in a handling that feels fitting.

Notes on tradition:

• The term Maharajsaheb is a respectful title used for senior monks; for women, the corresponding titles are usually Sadhvi or Sadhvijī. Use the title that is customary in the community you are visiting.
• If you’re unsure of a specific community’s etiquette, observe what others do quietly and follow the lead of senior laypersons or the sadhvi herself if she indicates a preference.

If you’d like, tell me which Jain tradition (Digambar or Shwetambar) or the region, and I can tailor the greeting to fit that community’s customary practice.