On Pretty Little Liars, Ashley is Hanna's mother. She's forced to protect her daughter on the series premiere, as Hanna makes a "mistakes" and Ashley says she'll take care of it.
Added:
You won't believe the kind of Aria has with Ezra on ABC Family's Pretty Little Liars. Just one problem: Ezra is her new teacher. Yikes!
Added:
In this clip from the Pretty Little Liars pilot, Emily and Maya talk about Alison. The characters are played by Shay Mitchell and Bianca Lawson, respectively.
Added:

Pretty Little Liars Season 1 Episode 1 Quotes

Ezra: I'd like to know more about you.
Aria: I'd like to know more about you, too.

Friends share secrets. That's what keeps us close.

Alison