She doesent ail kill Courtney for putting her in a mental hospital
Courtney is alison's twin sister, who pretended to be her
Alison
Suffication
by hands
Yes
Courtney wants to pretend to be Alison meanwhile Courtney was supposed to be in a mental hospital
Yes. Alison had a twin sister named Courtney.
she tried to be alison and she was in a mental ward
yes
Yes
Courtney stole Ali's ring :) hope it helps
Because the Pretty Little Liars weren't actually her friends. Courtney, (Alison's twin sister) made friends with them. Alison had nothing to do with them. So she's mad and tries to kill them.