Talk:MC: Cutie Magic Transformation/@comment-184.162.204.78-20200110110046/@comment-59788-20200110191144

You do have to kill her first, but I picked it up just fine on the current version.

My only other thought is that you're looking in the Slime Princess's chamber, which is the wrong place. You unlock the rest of Slime Palace after earth, through Julie. Slime Queen is located here.