I think Sam does feel very much on her own inthere,because to be honest she has nobody in there that she is pally with lets face it:
Anthony : Stays with Max and Saskia,loves himself only
Craig : Kinda on his own,was with Lesley
Derek : Doesnt like sam
Kemal: Sticks with Makosi
Makosi: Sticks with Kemal
Max : is obsessed with Saskia
Roberto : Sticks with Derek really,tries to be nice
Sam : well thats why I am writing this
Saskia : sticks with Max and Ant
Science : not too bad,doesnt like bullying,yet not much involvement
Vanessa : sticks with Craig.
There you can see that noone there really bothers with Sam,I feel sorry for her.