After you get rid of the cobra (if it was there), Lily is still away from her bed. Go back into the tomb, talk to someone, then go back to the residence tent, and Lily will be there to answer your questions now.
Hint 6
That's helpful, but it doesn't tell you what order to press the buttons in. And you won't know that until near the end of the game --
One of the things you found inside Lily's was the missing bit from Jon's notes. It says, "Rebirth precedes happiness. The three truths follow the light of Re-Atoum. Water flows at the end. Happiness before Re-Atoum." It's clearly referring --
Hint 9
-- to the buttons on the golden sarcophagus. So all you have to do to figure out that order is solve this very small logic puzzle. Read to the end of this hint for the answer.
Hint 10
If you recall (and it's in your journal too), rebirth = ankh, happiness = falcon, three truths = three dots, Re-Atoum = eye, and water = three wiggly lines.
Hint 11
Water is at the end, so that one is sorted.
Hint 12
Rebirth is before happiness, and happiness is before Re-Atoum, and the three truths are after Re-Atoum.
Hint 13
So the order is rebirth, happiness, Re-Atoum, three truths, water, or --