Hey, I'm not the person you're replying to but I also wondered "why 'unfortunately'?".

For me, it was because the "unfortunately" seemed to be hinting at something pretty specific. It's always (/usually) unfortunate when somebody dies, so I wouldn't usually specify it unless I was, for instance, hinting at something in particular.

I expected your link to explain something - I actually thought maybe you were setting up a joke just due to the phrasing, but it just goes to her Wikipedia page which sort of just leaves the lingering question of... Well, why is this death specifically "unfortunate", compared to all the other deaths involved in the context of the post?

Your reply gives context, and it's good context that she was a good person with a great cause, but it's also quite removed from the fact of her death... I'm not sure, even if I'd have known that context beforehand, that I would've made the connection that that's what you meant by "unfortunately".

Might just be a "me" thing, but that was my interpretation of your comment, since you were asking for interpretation ✌️

Oh, also, it's not a mistake really, it's a strange little edge case where interpretation meets a bunch of little context clues and things get a bit muddy, that's all. Happens all the time with English, and especially through text-only formats like this!