When Margo is talking with Eliza, she mentions that there is "some kind of timey-wimey magic going on here". This is a reference to phrase the tenth Doctor, on the show, used to describe time. "People assume that time is a strict progression of cause to effect, but actually - from a non-linear, non-subjective viewpoint- its more like a big ball of wibbly-wobbly... timey-wimey... stuff".