CadillacJack from Fanfiction.net has written several stories about Adora and Catra. Using various emotional themes and great characterization, their stories would fit well in several scenes in the show. For those who enjoy "Catradora" stories and accurate representations of characters, these stories are for you.
"Love Adora": Adora writes a heartfelt letter to Catra
"Twice Bitten": Catra deals with an infected She-Ra
"Broken Wings": How Glimmer's friends comfort her at the end of season 3.
"If you give a cat a mouse": Light hearted Catra fic
"Eyes of a Stranger" Catra's dark flashbacks to Shadow Weaver and the Horde
Discover their work here