>>102680690She couldn't stay because of the rising threat from China, both as a business and with her personal life too. IIRC there were actual chinks stalking her and the other talent. Then management got scared, afraid that whatever (stream) content and/or activity she had in mind would have been thoroughly hijacked by bad-faith actor(s). Her leaving was the only choice. Notice that after her graduation announcement, there was less zhang harassing her streams or any of the girls' streams, and then fast forward till today: no zhang has actually bothered disturbing her anymore, even when she went full gung ho taiwan cocksucking.
>"Didn't they say she's welcome back any time?"Yes.
She could try convincing Yagoo and the management, but shareholders would only see her as a threat to the company. And even if she managed to convince all of them, it would put pressure on Cover to try to recruit back more of the graduated holos, some that are still in disagreement with the company's policies.
Like Fauna and her RM's relationship>"Is she too proud?"Also yes.
She had shilled on not just Vshojo (who got revealed to have been paying people to shit on other companies in many community forums, especially toward Hololive) but now the indie sphere. Trying to come back now would make her a bigger loser than what she currently is.