I happen to think that 'the decision' was made before her album's debut.
Sure, Haley's debut is the first time I've ever experienced anything like this (following a new, unknown, artist from the beginning), but I couldn't shake the feeling that the bare minimum was being done, but it was her debut, so in my excitement, it was easy to ignore the thought.
That feeling, bare minimum, followed me to Lollapalooza, as well. Ridiculous they spent nothing to highlight her participation before and after such a significant 'get' in a young, new performer's career.
So no surprise at the abscence of a 'highlight' for Haley from Interscope for Carnegie Hall.
I know, it's Haley's nature to always be grateful, find the positives of every experience and don't look back, but if I, a humble fan, had that sense, I would have to believe that Haley too had a notion, so maybe why she decided to take control of what she could, learn what she did, meet and impress all she could before the 'hammer fell'.
Maybe it's her nature to be so proactive in the direction of her career... l would not be surprised if, in this case, she knew something was up, so gathered as much experience as she could in the time she had left with Interscope.