Answer:
Conflicted, upset, and disappointed.
Step-by-step explanation:
The girl is obviously showing signs of distress after the idea that her diary and personal writings were invalidated by her mother viewing them. Try putting the character into your perspective; you'd be upset and angry if your mother went through your personal belongings and read your diary, correct?
That is exactly how the girl is feeling; upset, angry, violated (in an emotional and mental sense). She does not wish to see her mother because of the disbelief she feels that her mother would even look through her diary.
Long story short, it's safe to say that by the end of the story, the girl feels conflicted, angry, upset, violated, and deeply insecure.