Nice voice, worth encouraging, and perhaps protecting with a few pro lessons to make sure it stays good. My big beef is. in two areas, and they DON'T relate to her singing. She is in serious danger of becoming the soundman's nightmare. Big range from a bare whisper to a belter and she cups the mic, rapper style, she changes her grip slightly and you can hear the change in tone when she covers the rear vents, making it more an omni - but if she's ever working in a near feedback situation with close monitors, doing this will make it very prone to feedback and nasty sounds. She needs to be taught to leave the capsule exposed. I now quite a few quite big names who are so difficult to mix, and worse, they blame the audio people for their feedback prone sounds, when it's them. Great for rappers, rubbish for singers.
The other thing is that the song is fine, for a mid set slower number, but it took nearly a minute to get going, and the first section sounds if you don't know the song, to be a singer who has got lost - the track being very sparse, and the audience noise spoils it. Works in a recording, but in a show like this with screaming kids, or an audition - you'd not get the job with this one. Choose songs for these kinds of shows by what the general audience person would think good, not your favourite. Wasting a minute of a three minute spot will mean losing a good proportion of the audience who switch off.