

And in this story, many generations of this family's will has just been passed down to you, culminating in the death of either a beloved friend or hated enemy, depending on what you choose, and that will affect how your character reacts against Purity and Matari.

The point of the relationship tally was to set the Dragonborn's state of mind in the final two quests.

Kasia's death was planned out since the beginning, as was stated before I think, and was even hinted at in the beginning in Jonestead.
