Just curious to see what you all think. It feels like she is looking for closure.
I think closure is overrated, at least in situations like this. If saying her peace to the both of them would really and truly allow her to feel better about it, that's one thing. But it wouldn't, especially if as you say she really just wants the last word. But no matter what she wants - or thinks she wants - confronting them is so unlikely to result in her truly feeling better that I just don't think it's worth the effort. Even if by some miracle they sat still and silent while she harangued them, and didn't interrupt with their own side of things, what in the world would it accomplish? No one's mind would be changed. She might feel better for awhile, but inevitably she'd get annoyed again, if only because she'd think of even more things she should've said.
This doesn't sound like one of those situations where she can make a simple, factual, non-subjective statement that would actually change or clarify things. Something soap opera-ish, like "You hate me because you think I slept with your lover, Raoul, at the New Year's Eve party up at the old haunted mansion. I just thought you should know, I wasn't even at the mansion that New Year's Eve. I was up in the International Space Station, saving the world from parasitic aliens, and I can prove it! So thank you so much for your faith in me, and you're welcome for not having an alien inside your brain right now. Good day. I said good day!"
Unless she can say something like that - with different details, of course, if only because there aren't that many guys named Raoul and her superiors would never allow her to admit to fighting aliens on the ISS - there's absolutely no point to confrontation.