Buried alive is an old piece of parchment received from Hameln the Jester in the Sisterhood Sanctuary.
The scroll documents the high-ranked members of the Sisterhood being moved deeper into the Sisterhood Sanctuary, who did not wake after a fortnight (two weeks). This was done in accordance to the laws set by Phosani, the Sisterhood's founder.
The elders haven't woken for almost a fortnight and so by the laws set forth by Lady Phos, we must move them deep into the Sanctuary with all their possessions. Over the years, the elders have feared retaliation from their enemies. In their weakened state, they stand no chance in defending themselves.