If she chose Erudite

Abnegation, Dauntless or Erudite.

Sixteen year old Beatrice chooses by accident Erudite, and follows her brother, Caleb, to the Erudite headquarters. She tries to fit in, which isn't easy for a Divergent.
What does she do when she hears about plans for an attack on her old faction? Will she try to safe her old family and neighbours, or will she stay loyal to her new faction?

I don't own divergent, the credits go to Veronica Roth.

May contain Divergent/Insurgent/Allegiant spoilers! I recommend you to read the original triology first, before you read this story.