Artist Eyes

Rachel is different than everyone. Rachel is an artist who makes good money. When asked how she makes her art she says she draws what she sees. Rachel is not lying, she actually sees abstract objects and color everywhere. She says she has the gift of artist eyes. But this isn't normal, why does she see this, is she crazy? Rachel certainly doesn't think so, until something happens that open her eyes.
(Based of the artwork of rainbow rain girl, don't know the real name)