>>37038846She has, but she deletes tweets so often that we don't really think too deeply about it (recently Mike tweeted the same picture three times, and when she explained why in her twitcast it was for an adorable reason).
Honestly sounds like you should just give them the finger, say your goodbyes, and delete whatever online presence you've had that interacted with them, because no one should be suffering just for doing their oshikatsu. Also stop watching them, even if it's just for a few weeks. I know it's hard to just stop watching them after spending so much time and effort into cheering them on, but you wouldn't have been guilt tripped into staying if you didn't happen to watch the stream where they do it.