[ Vanya's reaction is nothing like Diego's had been, and for good reason. She hadn't been there when Klaus had explained that Ben was the one who saved him from the crumbling mansion. And Ben doubts she had been aware of him at all in the concert hall, even as Klaus conjured him in that strange blue light, and he dealt with the gunmen that were after them. She had been lost, then. In some kind of trance.

But even without any of that... Diego would still have had more warning, than Vanya. ]

No, it wasn't like that.

[ Ben's gaze drops, head bowed as he considers his words carefully. ]

The opposite, in fact. You- probably remember how it was, right after I died. Everything was such a mess. And then you two didn't see each other for years. You... missed all the times he tried to tell the others, and- [ A brief pause, as Ben skirts close to a painful memory ] - and... told Dad, which didn't, um, go great. And then the others just didn't believe him. Allison thought it was a mean joke, or like, trying to get attention. Luther was sure he was hallucinating and legit started talking about a psych ward. Diego just got really sad and did that thing he does where he covers it up by yelling and told Klaus to shut the fuck up. We tried but they never listened so by the time he saw you again we had just... stopped.

[ There is something there, in the way Ben says 'we', which gives a hint to how much he and Klaus had been functioning as a unit for some time. He had had Klaus when he had nobody else, and the same was true in reverse. Ben looks up at Vanya once more, his gaze level and unreadable. Very gently, so that it sounds less like an accusation, Ben asks: ]

Would you have really believed him?

[ He knows the reasons for his siblings' disbelief were legitimate. Klaus was a liar, a drug addict; they couldn't trust him. He just wants Vanya to see that this wasn't one more case of her being left out - that none of the rest of them had really known, either. ]