>>5326182She got pissed off because people were linking them just because they had the same artist when she had no communication with Uto at all - and a huge language barrier. Nabi could at least speak some English. This was even before all the drama about Uto's stuff had broken out, so it wasn't a reactive distancing. On the other hand she has obviously communicated with Nabi for quite some time and knows what kind of person she is, so there's no problem with acknowledging her.
Also the whole 'sister' thing is dumb because of how many Nabi pumps out. By that token if 'sisters' are supposed to acknowledge each other, then Ame should be promoting the other much smaller ones as well. And I doubt Uto really reached out to and acknowledged any of the others as well.
If one of them doesn't then it reflects badly on them - what, you're only sisters if you have big enough numbers? Which means basically they're forced to commit to forming at least a superficial friendly relationship with every new chuuba just because Nabi made them, regardless of the person behind it. That's a recipe for disaster. Ame was smart to disengage from that kind of obligation early on.