Explain that you're a private investigator, with some questions for Ms. Featherton

After a short pause, the voice replies pleasantly:
"Very well."

The massive gate opens slowly inward. The cobblestone drive curves out of sight, behind tall, well-manicured greenery.

"Kindly wait inside the gate for your escort. They will bring you directly to the manor house. Please don't stray from the path. The grounds are ... expansive."

You step past the gates and they shut silently behind you.