Eta smiled, glad that the shade could not see it.
Good. He took the bait and almost swallowed the fishing rod.
Time to put the pressure on him. See if he cracks.
This is going to be hard.
She turned around, adopting a more serious but slightly smiling facial expression.
"Oh, it's quite simple really. It is vitally important that I deliver a message to a certain shade. I know the name of the recipient but not much else. So all I need is for you to help me find that person or give me any information that would help me find them."
She took a few steps forward, making sure she was between the shade and the form on its desk so that it could not see it. At the same time she stared at the shade intently.
As they say in my profession, "Things not seen are easily forgotten"
"I believe that anyone who aids me in my quest deserves an appropriate reward. And, since I am a witch of some power, I am usually able to grant them something they desire. But the easiest thing for me to give you would be gold. I have plenty. I have already offered one to the one that led me here, but he said he didn't want a reward. Very noble of him, don't you think? What about you, is there anything you desire... Gef?"
Eta dropped what she thought was the shade's name casually, but with a small pause before it so that the shade would notice.
Get it to think that I can learn their names by supernatural means so that there's no point in hiding them from me, get it to think that there's a reward for them helping me and get it to think I'm in some noble quest. The more info I get, the easier it gets. Just got to keep them talking and keep them isolated.