The scenario in which Delia,who is
14, often feels uncomfortable around people because she believes they
are watching and talking about her and usually this happens at church, school, and
family gatherings according to Elkind, would be described that Delia is experiencing imaginary audience.
The term imaginary audience was given by David Elkind in a paper in 1967. It describes a state where an individual imagines and believes that people ar watching and talking about her/him.