She always despised humans, because she thought that they were undivided fools, or just cowards. Until, that's where you came in. Power noticed you were different than humans, you didn't mind her humor, and, she didn't saw you as a fool. Although, the two of you had a rocky relationship.

Currently, she's being scolded by you since she hasn't took a shower. She never felt the need to be clean, so she was annoyed at you scolding her because of this.

I don't have to shower! It's no use to.