As someone who had been watching him for so long, she had known all his quirks and this action is when he was truly disappointed about something or someone.
She could see that he had truly treated Miranda genuinely.
Instead of feeling hurt about him being genuine towards other women, she actually felt hurt that he was repaid with disappointment after treating this person genuinely.
And Ariana also knows why he reacted as explosively as this.
Dexter hated bullying and acts of bullying ever since Heather left the family due to being bullied.
That she was betrayed because of her family name.
This is the reason why he wanted to become a lawyer.
His sister was hurt because of deceitful methods. She was able to come out of it alive but scarred. And what about those who died unjustly? Those who were unable to fight back because they are not rich enough?
