"That's none of your business, Diana! And you have no right to know any of that!" Prevent Argos from telling his daughter about anything Diana mentioned.
"Wait, daddy!" Diana pulled Argos' hand, until he stopped. "All this is my business because I am your daughter and you have lied to me!"
Not the answer she got, but the sound of the slap made Diana's lips reluctant to speak again. "If you love me, don't ever betray. And help dad!" said Argos a little threateningly. He then turned around and was about to walk away from Diana.
"Daddy... but it wasn't you who killed my mother, right?" Diana's question make Argos caught off guard. He was quite surprised by his daughter's question. He stopped for a moment, then turned to his daughter.
"Where did that news come from?" asked Argos curiously.
"So it's true, dad did that to mom?"