Mona does NOT look happy in this scene, does she? It's a photo from the PLL episode "Breaking the Code."
Added:
Hang in there, Spencer. This Pretty Little Liar is having a hard time dealing with her family problems.
Added:

Pretty Little Liars Season 2 Episode 21 Quotes

What exactly are we doing here cause I really don't feel like having a tea party with the two of you?

Aria

Wren: My family has issues too.
Spencer: Oh really, like what? Did someone spread their butter with a steak knife?