I`m speaking about the sound of her voice.
I do think it`s pretty clear it`s not natural sounding, but done on purpose.
I wouldn`t want to tell which notes are altered and which aren`t or if her voice got better or anything.
Maybe I worded it bad, it`s just that they`ve done something to her voice to let it sound, well, airy like that.
Maybe even made it a bit higher, idk.