Holly mentioned that her name is actually Margaret and she is majoring in Russian literature. Molly also implied that the reason that they are friends because Holly is a less hotter version of her.
When she and Holly followed Ian and Mark back to their apartment, Molly stayed with Mark to seduce him. However, Mark convinced her to play board games instead, which disinterest her.
Molly has long, wavy brunette hair with grey eyes. She wears a yellow tube dress.