https://www.youtube.com/watch?v=aVevvbFNKiY

At about 1:30, just after the "I was very nervous" line, Haley pushes her voice until it breaks. I found it a lovely little grace note, emphasizing the lyric.

I wouldn't call it a voice break, more an intentional melodic variation by singing a perfect fourth higher than the expected note in falsetto. But I agree: it sounds marvelous.