They started this because they had nothing to do. And talking about Caeli's past would just turn the atmosphere sour.
"Now that you know the truth, do you hate them?"
"Who, my family? We may be related by blood, but I will only count my real parents and sister. As for the rest… well, I don't blame them.
The world we live in requires strength; without the ritual, they probably would not survive this long."
"Don't you think they should seek another way?"
"They could only do with the cards dealt to them. Not utilizing it is foolish. Although I wonder what the cause of all this is. I believe there are no other families like us."
"You mean the power?"
"Yes, why would twins need to be killed while the other gets stronger? I know a few Templar and Witch twins. It doesn't work like that."
"Probably related to the secret place in your family. Do you have any idea what it is? Aine says it's just history."