Shani (Chapter III)
To sleep with Shani in Chapter III, you'll need to do three things:
  1. Complete the quest The Source and send Alvin to Shani.
  2. Make Alvin happy (praise him, tell him what he wants to hear, give him candy).
  3. Give Shani a Silver Amber Ring. You can buy one from the peddler right outside her house.
"Say no more. I want to make love...."