Answer:
She doesnt feel comfortable in her faction
Step-by-step explanation:
She feels this way because she doesnt believe she can be fully selfless. She wants to look in the mirror at her reflection and shes naturally curious about things. Which isnt the way of Abnegation. As the Choosing Ceremony approached she was confused, she didnt know whether to choose her self or her family. Tris didnt want to betray them. When Choosing day came she chose Dauntless and her brother chose Erudite.
If you need anymore help with this book, let me know.
Hope this helps (: