It doesn't always work out. Hyorin's victim tried to contact her privately for a long time but was ignored. Hyorin only responded when the victim made it public.
You mean Hyolyn's 'accuser' because they already settled it and there was no conclusion to whether she was a bully or not.
When Hyolyn threatened to sue the accuser, she started to get defensive and that backfired because for some reason Hyolyn defending against allegations by suing is a woman being a bitch according to Koreans. Hyolyn then wanted to settle it in private instead of suing, and they came to a proper conclusion that was not made known to the public