Girl, if you want to concentrate on being an actress and a youtuber then why bother joining the group at the first place?
We really don't know the full story lol, yes she was in the industry before, but the atmosphere and how groups work are vastly different from agency to agency and groups within them.
it does suck she has to leave and probably complicate things for the other members but maybe something happened along the line that we don't have idea of.
anyways, don't be quick to judge
Not judging her but just find the statement she puts out on the reasons for leaving the band kind of unconvincing.
Unless she is telling us to read between the lines and actually meant that she "cannot work" with the girls and prefer to continue solo.