How does the Christmas incident signify a turning point in Jeannette’s life? Does the event change her perspective about her father?

I think Jeanette finally realizes that her father just ruins things. She learns that all his speeches and insights are illusion, like the glass castle. On Christmas night, the family attends Mass and Mom insists Dad joins them even though he is extremely intoxicated. At church he makes a scene. At home he lights the Christmas tree and gifts on fire. After that Jeanette knows that she has to emotionally separate from father: there was nothing to believe in him about.