Matthew considered this question. It was terrifically personal, really, but all the same-- Di had let her flatmates remain privy to their conversation, rather than taking him into her room for some privacy! "No, no, it's not too personal, really, Stephen. I mean, it is obviously a personal affair, but even so... well, I would have shouted it from the rooftops, were I not afraid of tarnishing my family's name, solely for the sake of shaming the-- unconscionable bastard," he finally allowed the term to escape his lips, and turned slightly red at his crude language.
"That is to say... well, he... abused my sister, Diana," he drew out slowly, as if Stephen really needed to be told about his only sibling! "Abused her sexually, I mean! I mean, my Uncle Nicholas found out, when my father thought he was dying... And as for Uncle Nicholas --" Though he felt Diana's story was free to share, he hesitated to tell Nicholas's secret. It was so humiliating to think of sodomy, particularly in such a context of child abuse! Finally he decided to hold his tongue on the subject of his uncle, and instead took out his wand to conjure a couple of wine goblets.
"Here, Stephen, I think we could both do with a drink after hearing such things...!" Not that he had imbibed after first hearing the bad news-- but he figured it was high time to make up for lost time!