It's not amiably... and ally isn't available on P99
It's either kindly or warmly.
I remember hailing Camlend Serbold and i wasn't able to get the quest dialogues at amiably.
I turned in a dozen or so more moonstones and ended up at warmly. So warmly faction is for sure good.. only question is if kindly faction is.
Here's a link to the quest page
http://wiki.project1999.org/index.ph..._of_Life_Quest
can update if you figure out what the correct faction hit is or leave a note on the discussion section.