She got what she wanted, admission into college. Why do you say she failed. She failed to achieve someone else's goal, but she achieved, or is achieving, her own.
"We realized that not graduating wasn't the end of the world," Warner said. "But it took a long time to come to that conclusion."
I think she went through school with the intent of getting a highschool diploma. I think they were not happy when she didn't get it. I think they're making the best out of it. I don't think they made a conscious decision to forego the diploma. I think they tried to get the school to even change the rules to accomodate them. I'd say the failed .
So she heads to college.... maybe she learned something from this. That would be the real best outcome.