I'm a bit tired and recovering from illness, so I'm not at my best in terms of...well, coherence, but I'll try my best.
The lone fact that a freshman actually went out and wrote a song apparently on her own impresses me. It's a level of follow-through I'm not accustomed to from a high school crowd, certainly.
Her overall vocal tone is quite suited for Pop, and fairly well adjusted considering her age, but she could stand to brighten her vowels a bit. Just be careful not to fall into the ultra-bright, breathy, airy stuff that's oddly common today. She's got a few moments hinting at something more substantial than that. She sounds like she could have something of a powerful voice if she focused more from her diaphragm.
As a bit of an aside, the vocals could use a little more emotional...oomph. They get the point across well enough, but some of the extemporaneous things("ooh"s after the first chorus, for example) felt a little forced. Somewhat lacking in soul, if you will.
Her diction kinda surprised me. The lyrics were pretty well-articulated; I didn't feel obliged to use the cheat sheet, so that's certainly a plus. However, her vowels could stand to be tightened up. Some of the pronunciations threw me off slightly. The lyrics themselves are fairly standard adolescent musings. That's not meant as any sort of put-down, of course; she's an adolescent, and that sort of material is to be largely expected. You've gotta write what you know, after all.
Anyway, I hope my sick/sleepy ramblings are somewhat helpful.
