The ending ... (contains spoilers)
How is the ending meant to be interpreted? She falls off the rooftop as if committing suicide, yet her fall is broken by the crowd, and she vanishes into the melee, while her friend watches with a smile on her face and her dad whom she despises stands nearby having finally got his daughter back ... It's a strange ending.
"Almost nobody dances sober, unless they happen to be insane."
H. P. Lovecraft