Talk:Mona Vanderwaal/@comment-26920609-20160316063156/@comment-26917793-20160320122709

Mona has herself to blame for a lot of that, because even when she does something that's for the liars' benefit, she keeps them in the dark about it, and the liars hate being kept in the dark and not knowing what other people are up to, especially the people they don't know if they can trust or not. The condition the liars gave Mona in season 4 when she became the fifth liars was full disclosure and no deceptions, but it didn't take long until Mona was back to her old sneaky ways again, making the liars distrust her.

Ali has suffered the same fate a couple of times. She was never against the other liars but because she did things her own way without telling the liars of her plans (and because A made her look guilty) they turned on her.