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Well, in the book she isn't. Alison hated the PLL, she was never their friend. Courtney was. Courtney was Ali's twin sister and he had mental issues.

The night Ali diappeared, Courtney wore Ali's ring and pretended to be her while Ali was at home, trying to convince her parents she was Ali and not Courtney.

Ali's parents sent Ali to a mental hospital

because theu thought she was Courtney and Courtney died because the killer thought she was Ali.

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13y ago

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