4minute's Jihyun hinted at the group's disbandment a week ago?

A week ago, Jihyun had posted a page from Keigo Higashino's 'Miracles of the Namiya General Store' that read,�

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"There are people who are saved through your music. And the music you make will no doubt last for a long, long time.

If you ask how I can say this, it's difficult to answer, but it's definite. Please believe that until the end. You must believe that until the end of the last moment.

Ah. Is this it? Is this the last moment? Then must I just keep believing? Is all I have to do keep believing that my songs were not useless? Then, father, I've left my mark, right? Even if it's a fight I lost, I left some kind of a mark, right?"

Many are speculating that she had posted the page in light of the group's disbandment. What do you think?