When her kingdom plummets to financial ruin due to tax increases, Tiana seeks out Dr. Facilier for a solution. Facilier, however, has his own agenda and swindles Tiana's prized firefly ruby medal that belonged to her late father. Despite her loss, Tiana manages to save one of Facilier's captives, a frog who is actually Robert's true love. Some time later, Tiana becomes the leader of a resistance against Lady Tremaine and the royal family. Undercover, she attends the Prince's royal ball, where she rejects a platter of frogs legs. Tiana later saves Cinderella from several of the royal guards, and introduces her to the resistance. She also meets Henry Mills and his mother Regina, as well as Killian Jones, who all join the cause alongside Cinderella.
When Sabine finds out that her room-mate Jacinda quit her job, she worries due to the fact that her job was a large contributor to the rent money for their apartment. Sabine later helps Jacinda attend her daughter Lucy's ballet performance by working there as caterers. Sabine and Jacinda eventually start a beignet business together and buy a food truck to make more money after Victoria Belfrey increases their rent. Sabine expands the Rollin' Bayou by hiring Tilly and Drew, although the latter is secretly working for Mr. Samdi. When Drew goes missing and Sabine discovers his ties with Samdi, she and Jacinda confront him. They discover that Samdi has kidnapped Drew, but before they can help him, Sabine and Jacinda are trapped in the closet with him by Samdi. When the curse is broken, Tiana and Ella escape from the closet with Naveen and prepare to attack Facilier, but he vanishes.
- She is based on the princess Tiana from The Princess and the Frog.
- Tiana also loosely alludes to the princess from the fairytale The Frog Prince.
- Her PictYourThis account name is "Sabine_Says".
- S7, E01: "Hyperion Heights"
- S7, E02: "A Pirate's Life"
- S7, E03: "The Garden of Forking Paths"
- S7, E05: "Greenbacks"
- S7, E08: "Pretty in Blue"
- S7, E09: "One Little Tear"
- S7, E10: "The Eighth Witch"
- S7, E11: "Secret Garden"
- S7, E12: "A Taste of the Heights"
- S7, E16: "Breadcrumbs"
- S7, E17: "Chosen"
- S7, E20: "Is This Henry Mills?"
- S7, E21: "Homecoming"
- S7, E22: "Leaving Storybrooke"