RECIPROCITY - Temet Nosce

After enduring six months of utter despair at the loss of Edward and her chosen family Bella decides to take matters into her own hands; She won't be forced to endure the mediocrity of human existence any longer.
Remembering the vague stories Edward had told her of the Volturi during the initial tour of the Cullen house Bella decides to seek an audience with them in Volterra, knowing a confrontation with them might very well mean the end of her existence altogether.

Or

The one in which Bella has gotten her heart broken one too many times and leaves her old life behind to be changed by the Volturi, and Aro couldn't be more happy about it.

Story available completed on ao3 https://archiveofourown.org/works/30680465/chapters/75702632