@Null to elaborate on that Fishtank shit, only 1 out of 10 contestants weren't previous fans, and that one left the same day as Summer got kicked. Summer was screaming the night before being kicked thinking that this was like the Truman show where she was the only real person, which led to her being taken into the basement, presumably to cool off and to decide what to do with her (She had spent the day switching between being manic and depressive). You could then hear her screaming early in the morning from there, which could explain why she claimed in the voicemails to have been raped, while also apologising for claiming that and saying that they had been nothing but good to her. She says that a man in glasses held her down, took her clothes off and proceeded to touch her boobs, but judging by the aforementioned screaming she might've been restrained while in a manic state to prevent her from going apeshit down there.
I suggest listening to the whole call, she starts out calm but gets more deranged as it goes on, saying that she loves them all, has a crush on Jet, this show means everything to her and they are fucked if they don't bring her back so they have 3 choices, to kill her, let her back on, or institutionalise her, saying that she will die if she doesn't return, just crazy shit. She's out of the psych ward, probably back home with her family. (She said that she wasn't contacting them after getting kicked off and in the psych ward to prove her loyalty to the crew).