Betty, if I may... Tell her to go to school for 4 years, get a bachelors degree in something (while in ROTC) and then try to be an officer..
If she's planning on making a career out of it and REALLY wants to "matter" (no offense to NCO's, I was one too), this is the way to go..
If she was especially good in school with a high GPA and did a lot of athletics, she could apply to Annapolis or Westpoint..
I'm not sure what academic level she is at, however in order to get in ROTC or any military academy, you usually have to have a pretty high GPA and be involved in sports as physical fitness is a requirement..
She could also go the path of a Warrant Officer (most pilots on the US Army go through WOFT or Warrant Officer Flight Training).
However, she would have to score especially high on her entrance exam to be considered for this.
Either way she goes, tell her to consider or at least look in to being an officer.. The pay is better, the benefits are better, and it looks better on a resume..
Good luck to her!