Answer "Yes" when talking to her for the first time and then either choose the "Why, I'm at Transcendency, of course." or "Oh. I assumed you could see my aura. I'm sorry." lines, then ask her about the state of things (IN 8 and Speech 65%).
Inform her that you're here to kill her for Merk, but say that you won't do it. You will end up with the letter in your inventory.
Delivering the report to AHS-9 yields 500 xp.
Note: If you get the zeta-scan before you take on the kill Hubologist in NCR for Merk. quest, you won't be able to talk to The Enlightened One and warn her about your intentions. Any attempt to talk to her will only result in her saying "Greetings, fellow seeker. There is nothing more I can do for you. You must continue your journey as an AHS-1 on your own."