There's always going to be something standing in the way of success, and it's obviously no different for Leona.
But I really don't see the problem with her having had lessons or whatever. OMG so she had a few vocal coaching lessons for her (already amazing) voice to train it a bit before following her dream. It's not that terrible!
I really do hope now that even if she doesn't win, she ends up being successful, and to be honest I am quite confident that will happen.