I meant... after so much tragedy, this family should be happy again. You've mourned enough for a lifetime already.
-- Morella (Chapter 2)

Importance: Morella's statement on the night of Eulalie's funeral is a recognition of the long period of mourning that the Thaumas family has endured as a result of the many deaths in the family. She foreshadows a transformation at Highmoor, whereby nearly all mourning ceases and the girls end up becoming extreme in a different sense: they desire to have too much fun, to make up for the years of black clothing and sombre evenings at home. Morella, wanting to benefit from her new position in life, wants to see the mourning period end for her own selfish gain, thus her statement is at once genuine and also carries with it a sense of falsehood.

The first thing I spotted at the breakfast table was Morella's blue satin dress.
-- Annaleigh (Chapter 4)

Importance: Annaleigh's statement, coming...