Micah was in on the search until he had to take the stage, and also referred to Kim's behavior as "bullshit." Ultimately, Moriah told Kim that she couldn't come to the concert. Kim, being the all-knowing, all-seeing, sugar-hating, control-freak Nazi that she is decided that what Moriah said didn't matter because she was going to do what she wanted.
In order for there to be reconciliation, both parties need to admit wrongdoing. Kim doesn't believe she's ever been wrong.