You are referring to the actress I think, I want to know how y’all the book character is cause it consistently says she is short, and at one point says when Tobias sits on his bed and she is standing, they are at eye level.
If tris can't see herself in a freakin' mirrior that is for the average height for about almost everyone, she can't possible be that tall. Also, in the book she mentions several times that she is short and she should know if she's tall or not. I assume she is 5'2. 5'5 or 5'6 is still considered somewhat tall. (Sorry I write too much...)