What is the climax of A Northern Light?

The climax or turning point of A Northern Light
occurs when Mattie realizes that the death of one's dreams is nearly the same
as death itself.  Weaver has lost all of his college money, so he decides to skip school
to help his mother put their home back together after the fire.  Mattie is upset because
she thinks that Weaver would have been a great lawyer and now he is giving all that
away.  She herself has also given up her dreams of going to college so that she can
marry Royal Loomis.  Sadly, she comes to the realization that Royal really does not love
her and only wants to marry her so that he can gain advancements in property.  While she
reads through Grace Brown's letters, Mattie realizes that she cannot help Grace because
she is dead already; Mattie resolves to live her own life to its fullest potential
because she has the opportunity to do so unlike Grace.  At this point, Mattie's life
makes a turn-around and she decides to follow her dreams.