[Sakura honestly doesn't know too much about what Shirou experienced during the beginning of the War, but it's easy to make a guess. She'd never asked about it since it wasn't important at the time, and honestly, it was likely he didn't remember it well anymore.]

It's fine, you've nothing to apologize for. [a beat] This may seem out of the blue, but will you be busy for the next few days? There's something I'd like to talk about.

[THIS IS GETTING TO BE A LITTLE TOO MUCH NOW. More than that, Saber not knowing about what happened isn't helping anything at this point. She thinks it's unfair that Shirou asked her to get along with her when she doesn't even know the full story, and can't ask about it either.]