Going by talent alone, she deserved to be in the top 12 at the least.
I wonder if maybe she had too much of a definite direction and knowledge of who she is as an artist and that made the show favor more maleable/agreeable artists for the top12 over her? She certainly has the voice, and is actually uniquely pretty, though I noticed that they gave her the usual unflattering lighting/angles a few times for the show.
She seems to have a lot of drive, and paired with her talent, I bet she will do well.She may one day be glad she didnt get trapped in the web of circular in-house spending, unadvantageous to the artist in all kinds of ways contratcs, and other assorted things that have made plenty of artists decide thanks, but no thanks.
She will probably end up signed, if she wants to be(if she wasnt/isnt already, that is). She will likely do well independent, too, if she chooses that route. If she is able to write her own material, that will greatly increase her chances, too.It would also be a big reason to consider going her own way. Artists who have their own songs need the big labels/contracts a lot less than those who dont , especially these days with cheap adequate home studios and local indie ones so easy to access.
Anyway, good luck to her.