Dawn thought being apart from her would open her father's eyes and he would finally realize what he had done to her all this time.
And for the first time after such a long time, he finally put her first.
However, Dawn couldn't be more wrong. The moment his father decided it was a good idea to bring Julia and Emily, she knew that her father was far gone.
She was more disappointed in him than angry as she walked away from him. It was not a mature thing to do, but then, hating a child for his own mistake was far from being mature.
Her father didn't really hurt her, but he didn't do anything when these people mistreated her. He allowed them to do whatever they pleased, hurting her without facing real consequences for their actions.
When Dawn walked away, Tony was about to follow her, but Zenith waved his hand to make the guards stop him before they escorted them out of the palace.
