I love how she repeats that last vocal line just a little too many times, to the point where the song seems unbalanced and almost annoying. But just when you think It'll never end, right at the EXACT moment this repeated screaming line would start being annoying, she immediately changes and resolves it. At 2:24. And everything falls beautifully back into place. It works really well for the song, and the simplicity of it is genius.