Answer:
The answer is imaginary audience.
Step-by-step explanation:
Imaginary audience is a term that describes the state which an individual believes or imagines that there are a number of persons or people enthusiastically watching or listening to him or her.
This kind of state is most common with adolescents (which Susan is most likely one). However, the fantasy of an imaginary audience can be exhibited by people of any age whether in childhood, adolescence and adulthood.