putting this to rest now because i was watching Narin while driving (she is comfy):
the collab is still on, no mention of any changes to roster so Remia was probably just trying to dissuade shitposters with the reposted schedule (too late bro, thanks for trying though). Narin's problem with it is actually the timing, it's at 9 AM for her and she normally gets up at 11 AM. she sounds excited to meet new people otherwise, and the early timeslot makes her nervous lol. she's not sure if she'll stream her perspective given that, but that's the reasoning and not any drama.
https://youtu.be/?t=600 (approximate timestamp for later, she's still live)
in other words, trust bro, trust korean woman.