Is Tina in the short story Jinx By Aimee Bender A Protagonist?

No, Tina is not the protagonist in the short story "Jinx" by Aimee Bender. The protagonist of the story is a young woman named Gwen. Gwen is the central character of the story, and the plot follows her experiences and struggles. Tina is a supporting character in the story who is friends with Gwen. While Tina plays an important role in the story, she is not the main character and therefore not the protagonist.