Man this is one hell of a crowd reaction, cool stuff! This year was really scuffed on production but sets the bar for offkai 2024 to hopefully be pretty cool.
Sounds to me like her voice was a bit tired at first, makes sense considering the subathon, the time, talking/singing beforehand, etc. Despite that, she sounded amazing. Especially after the first song, it felt like she really got going. Wow. I think she said she'd trained as a Coloratura Soprano, and it feels amazing getting to hear her be able to just belt out so many songs one after the other!!! That is probably my favorite performance of hers for Part of Your World (granted I wish there was a version sans cuss words, so I can turn up the volume at home). So many of the songs she sings regularly, the lyrics, they... just hit so hard knowing her situation. Oh wow...
If i remember right, her singing was delayed for 3 or 4 hours and she was singing for stream all that waiting time. I have a lot of versions of that song sung by her, i think you can definitely find a version without curse words =)