What drove these seemingly innocent good-natured girls to ruin Blair's social/academic life .
Breaking in a newbie with her own personal vindictive style.
(2.16)
GG: Leave it to B to know, the devil is in the details.
We can undestand their initial naivety, it sounds like a real chance at experiencing true sophistication.
They fall right into her trap, but manage to scrape by with some dignity and a mask of forgiveness for a prank.
Still they reject her second offer at what she initially promised and go home.
(1.05)
J: Monday, lunch on the steps.
B: Done and done.
(2.16)
Rachel: I'll see you Monday.
B: Of course.
Being dissed and dismissed awakens their inner b*tch.
Even the minions think she's taking it too far at one point.
They see too it she is punnished for her ongoing hazing. Dumped/ Expelled
There is a snitch among her, but it doesn't matter she has lost no matter what she says.
(1.13)
N: So please leave.
(2.17)
Headmistess Queller: You give me no choice but to ask you to leave Constance Billard.
Mommy and Daddy are there to watch her fall, but do they really catch her?
(1.13)
Eleanor: Blair, I am very concerned
(2.17)
Harold: Blair. I'm worried about you.
Lays down her arms and surrenders after spending the most part of her day/week spreading vicious rumors,
B herself also spread rumors.
(1.16)
J: I lied and I stole and I lost the respect of my family, for what so I could be like you?
You asked me before if it was worth it. My answer is it's not
B: I tried to warn you, there's a price to pay...
(2.18)
R: What's happened to me. I'm so sorry
B: Well your punishment is...just live with it. Its not easy, I should know.
She is left feeling more alone (especially in season 2) than she thought she would,
after receiving an answer she did not expect.