I saw someone's headcanon somewhere that Rumi's voice loss wasn't caused by her patterns spreading, it was just caused by normal vocal strain due to her continuously pushing herself to work and sing and not take breaks. It was just a coincidence that her patterns spread to her neck around the same time it happened.
Dude, imagine Rumi finding this out somehow - like through a routine doctor's appointment or something (a REAL doctor, not doctor Han). That it had only been a normal bout of vocal strain and not her "lifelong afflicted curse" finally completely seizing her body. Imagine how annoyed she'd be because this would mean she overreacted over literally nothing! If they had just gone on break, she would've been fine! She could've kept her secret longer! It's completely her fault Zoey and Mira found out the way they did-!
(Well, it-it's not a bad thing, really! She's happy that they know now! She's happy she doesn't have to hide this from them anymore! It's just…well, if she had known, maybe she would've caused them a lot less trouble the last few months.
Maybe everything at the Idol Awards would've gone much smoother.
Maybe none of it had to happen.
Maybe there's still a small part of her that feels guilty about how long she kept the secret from them, and selfishly sort of wishes she could've at least known if her patterns would disappear when they sealed the Honmoon, because maybe then she would have toughed it out until that point and then maybe things would be better than they are now.
Sue a girl for having intrusive thoughts, then!)
And on one hand, Zoey and Mira would be incredibly upset at her for even venturing down that mental rabbit hole. For being upset that she couldn't keep lying to them forever. (What the hell, Rumi!? We talked about all the lying and hiding! You trying to say you'd take it all back if you knew it was an option!?)
On the other hand...this means Rumi will actually let them take breaks from now on. Which isn't necessarily a bad thing...you know, beyond the fact that it came at the cost of Rumi's mental well-being...