No the girls do not know.
Yes. Alison had a twin sister named Courtney.
yes
Ally's psychotic sister.
Yes
Courtney is alison's twin sister, who pretended to be her
Yes
Obviously. she gave birth to them
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.
it is alison's sister
Alison has a mentally insane, twin sister named Courtney.
Just look up a picture of Allison from Pretty Little Liars, because they are identical twins.
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.Allison is still alive. But she is not A, Jenna is.