Beatrice "Tris" Prior Timeline & Summary

Beatrice starts off as an internally conflicted Abnegation teen.
But that all makes sense when she learns that she is Divergent.
When it comes time to choose her faction, she joins Dauntless—the brave ones.
She goes through Dauntless initiation (fighting, shooting guns), gaining friends and enemies
One of her friends betrays her and then commits suicide, which makes Tris feel bad.
But she also kind of gets romantically involved with Four, which makes Tris feel good.
While she's learning all about what it means to be Dauntless, she meets her brother, the Erudite, and the scary leader Jeanine.
Soon enough, she figures out that Erudite leadership is planning a war on Abnegation. Not good.
But before she can do anything about it, the Dauntless get mind-controlled by Jeanine.
Luckily, since Tris is Divergent, she isn't controlled, but she goes along and pretends she is. Smart move, Tris.
Unfortunately, she gets caught by Jeanine. Fortunately, she's rescued by her mom. Unfortunately, that requires her mom to sacrifice herself.
Then Tris finds the rest of her family, and with them by her side, she infiltrates Dauntless HQ to destroy the computer running the mind-control program.
Then her dad sacrifices himself for Tris. We're sensing a pattern here.
Tris helps Four break his mind-control and they stop the program and smooch a little bit.
Then they all escape on a train, where they're headed for refuge with Amity.