Girasol Has Withdrawn

the main reason for me, is the mood whiplash she had, in the morning she was all "NOT TO BE A SHILL, BUT I TOTALLY POURED HEART AND SOUL INTO THIS EVENT" and then in the afternoon, bam, left the company, even assumming a tragedy on her side rather than nexon, what kind of thing would make you, or force you to leave your job?

Alright. Going to get heavily pomegranated on for this, but I must respond.

Consider this completely made-up scenario:
Person working her ass off as usual, mood in the morning as you described it.
She receives a call that her beloved grandmother has been hospitalized in critical condition.
She informs her superior that she must leave for the East Coast immediately for at least a few days.
She is coldly informed that all vacation requests must be filed in triplicate at least two weeks in advance.
She says it's a family medical emergency.
They say a grandmother is not a first-degree relative and therefore it isn't such an emergency.
She blows up and rage-quits this heartless company that treats her like that after all she's done for them.

Note that I have absolutely no inside knowledge to base this on. Unlike some here, I had no personal communications with Girasol. This is pure imagination answering your question as to what could change a person's mood like that.