What's the Tone?

Page seven would break any one's heart. De Rossi describes her intense ritual of making her weekly desserts. After putting the "delights" into the freezer De Rossi describes her loss of control using a quick paced, forthright tone. She is in a daze, and eats every cup of the desserts in three minutes. She uses words and phrases such as "Before I knew it" and "relentless". After she realizes what she had done, the situation description is quickly changed to a deeply remorseful and gloomy tone. She uses words such as "hate" and "regret".