It's hard to imagine what I would have done if I was put on the spot like she was. That being said, there was no turning back with her. She made up her mind and rubbed salt in the others' wounds, rather being aware that she could have tried some damage control. Now, THAT is something that you can run through in your mind after the decision is made.
I'm surprised she didn't go the route of apologizing. "Hey, it was a split-second decision. I really think I messed it up. I'm sorry." I can't say that would have saved her from being snuffed at the next opportunity. But I don't know how it would have hurt.