The social groups that Dark Summer mainly appeals to are AGE and GENDER.
In Dark Summer, Zoe who is 18 is a chatty character, with a Blackberry, nice clothing which would signify she is a popular sort of person. She gives the impression of a typical teenager who would go out with friends, have a part time job (babysitting) and possibly a boyfriend.
Zoe is the modern day woman. As she is 18, we expect her to be a student, studying in college or university. The fact that she has a job and is left to look after a child shows that she is responsible and independent. Unlike British films like Shank (Ali, 2010) which depict teenagers as loud, aggressive criminals, Zoe embodies the hard working, normal youths of London.