Talk:Courtney DiLaurentis (Book Character)/@comment-190.18.43.154-20111119162631/@comment-4454233-20111120071400

Hi. It's because Ali was stuck at the Preserve during Mona's time as A. She only got out of the mental hospital after Ian Thomas's trial started up in Wicked. She only knew Mona was A after the media reported it, so they weren't working together. Mona never knew that Ali had a twin and she really did think that Ian was the killer.