Sigileth learned more from the guards at the fortress of Jirush than she told the rest of your travelling company, and now the two of you should act upon that information.
'TBD - Blah!'
The ruins of Nirgambâr may hide the one you seek. Sigileth thinks you should search at TBD, TBD, and TBD.
Sigileth discovered another entrance into the crypts below Nirgambâr, at TBD.
Sigileth believes Balakhad may be hiding somewhere within TBD Nirgambâr.
A satchel lies discarded in the corner deep below Nirgambâr.
Sigileth is in the chamber below Nirgambâr.