I don't see any real issue with her being there. I've only seen bits and moments of her so I can't speak to her fully but she seems like a pretty solid, talented person who does what she can to support some very important causes. And since she's only slotted in for being part of the music segment of the Fan Fest it seems like a decent enough fit. (And I'd much rather her be involved than any of the supposed "Real FF14 Content Creators" out there who are known names but do nothing but repeatedly crap on the game every chance they get)

I will say that I am concerned on what sort of in game content/context they'll include her in given that there is an implication of that as I'd rather she didn't really end up in game in any sort of main/unavoidable sense. But that's nothing to do with her personally and more to do with me not really wanting any known celebrity or personality to be part of FF14. It's not Fortnite after all. I'm already iffy enough on collaborations with other games but an actual person/personality is going beyond what I'm comfortable with.