Because one day when she gets a text from 'A' she sees that the number is not restricted. Instead its an actual number with digits. She recognizes the number as Mona's and rushes to tell Spencer, Aria, and Emily. She tells them to meet her at the Rosewood swings. As she is in the parking lot waiting for Spencer, Aria and Emily shout to Hanna, "Look Out!" But Hanna doesn't see the car coming until it hits her. Mona is the one who hit her and is also the Rosewood stalker. She hits Hanna in order to keep her indentity as 'A' a secret.
Mona crashed into Hannah in Pretty Little Liars.
Mona
Because Mona was A!
Hanna's best friend and A.
it was mona since mona is A
A. Who is Mona Vanderwaal
At one point, Mona was A on Pretty Little Liars. Now she is helping the girls figure out who A really was. She was A because she couldn't get tortured, if she was apart of them.
Mona is A. Mona was upset that Hanna had all these secrets that she never directly told her.
They were off and on but now, yes they are.
Mona (A) hits Hanna with an SUV, because Hanna found out who A was.
Hanna was her best friend. Mona also dated Noel Kahn
Lucas used to date mona before hanna and mona became friends.