The quest did state that the lair was abandoned for quite a long time. The purpose here was to purify rather than to save. Though, about the hidden pieces of the soul,
"Aarick. Are there more guardians like her? We came from one way, so don't you think there would be more of them there?" I hinted at Aarick. His eyes widened as he looked at me with astonishment.
"Ah! My siblings!" Diaspora, who was almost at her last wits, suddenly got herself out of insanity as she looked at me. Before her eyes turned in a certain direction.
A bright glow consumed her body as she positioned herself in the direction where the other hidden pieces of the soul probably were. And just as she was about to jump…
-Thud!
Dark red chains formed out of the ground, holding her down, rendering her unable to take the leap.