Tressa Davies

Tressa Davies is played by Tressa Evans-Salvemini. She is the protagonist of Mabel: Infinity Mirror, a five-episode special season (referred to, for ease of access, as Season Five).

Infinity Mirror
Tressa is a recent college drop-out from Ithaca, New York, formerly studying medieval history. She enjoys embroidery and her cats and has a condition called nemaline myopathy (this season, more than all others, deals with the ramifications of abuse and mistreatment of children, specifically disabled children). She wins the competition that Becca De La Rosa and Mabel Martin run, going to stay in Becca's grandmother's old House. After eating their food and telling them stories, Tressa finds she cannot leave the house; Becca and Mabel then reveal that they've been Anna and Mabel the entire time, and they've trapped her in their house until she repents for what she's done.

She reveals that she went to a school called Lang Primary Conservatory for the Disabled, and lived under the care of Lara Ouvriers, almost certainly an alias of Aurora Silver. When she was very young, she watched Aurora and her cult sacrifice another student, referred to as the mourning dove, in order to try to summon a god, presumably the King. After she admits this, she unstitches time itself and stops the event from ever happening before thanking Anna & Mabel for what they've helped her do. The last we hear from her is her laughing with both creators as the final episode fades out.