Answers: Frantic
When a mother loses her child, she's frantic. A scene is frantic if there's lots of action with little order;
Frantic is a word that means "<em>wild or distraught with fear, anxiety, or other emotion</em>". That fits well into the 2 definitions you're given in the text.
I would say that the best resource is a Encyclopedia
I would say "convince her to tell her parents the truth." That form of peer pressure is indeed a form of positive peer pressure since her friend would be pressuring her to the truth.
To explain an idea or event, or to provide information