Final answer:
The text does not explicitly state what Jocelyn wants to do for the duet with Moira next week, but themes of identity and societal expectations are present in the provided excerpts.
Step-by-step explanation:
Jocelyn's desire to bob her hair for her duet with Moira next week is not explicitly mentioned in the text provided. The references to hair and personal transformation, such as Bernice getting a bob cut or Amy draping scarfs and dreaming of happiness, suggest themes of identity and societal expectations rather than a specific plan for a musical duet. If Jocelyn wanted to change her appearance for a duet, it might symbolize a deeper desire for change or making a bold statement, which is a recurring theme in the excerpts provided.
The focus of the passages seems to be on the characters' internal struggles with popularity, appearance, and personal desires, as is exemplified by Bernice's haircut and Amy's yearning for a grander life. Therefore, any action Jocelyn wants to take concerning her appearance or performance would likely serve as a narrative element reflecting characters' development or the impact of social pressures on individual choices.