Despite the fact that she's several feet in the air and the gesture is ultimately pointless, Lydia flips off the general vicinity - which, sure, amounts to several balloons and a stray cloud. But the point still stands.

Then she makes one last awkward hop, pinwheeling her arms and getting her hair in her face with a muttered: "Can't believe I'm gonna die before my brother." Then she leans up on her toes to reach for the string of the gold, ghost-balloon.