[YEAH OF COURSE IT'S THAT HUH... This has the potential to go really badly depending on how Saber takes it, but she tries to be optimistic. If anything, what she worries most about is how this information will affect Saber's current relationship with Shirou. It's hard seeing him so depressed about her, but that might be an inevitability depending on what happens.]

My grandfather revived you. I don't know how, but he used the Grail to bring you back. When you came back though... You were different. It's like you were dragged through the corruption of the Grail itself, and it changed you. [It hurts to even think these next words, but they're the truth. She can't run away from them, or from her responsibility in this.] You were evil.