Because the pretty little liars where so mean to her and she wanted to get back at them
Because the "real" Ali wants revenge on the girls for ruining her perfect life.
Ali wanted revenge after her sister took over her life and she believed the pretty little liars helped her do so....she wants revenge.
A tells the girls who he/she is and sets a fire to try and kill them.
because A has so much against them, the person wants to kill them to get all their secrets out
Allison didn't kill her friends in Pretty Little Liars
Because when her twin sister Courtney befriended the girls, they ruined Ali's life so she wants to kill them like she killed Courtney
No.
no
None of the pretty little liars die. I've read the books, Ali doesn't kill anyone.
On the show she has issues (mental) and kills people but she becomes friends with them first
no
Suffication