![Tobias's sister (Four is Tobias Eaton) Divergent by fantasyornotyousuck](https://img.wattpad.com/cover/354089935-512-k179592.jpg)
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Tobias's sister (Four is Tobias Ea...by fantasyornotyousuck
Alexandra is the sister of Four as he is two years older then her. Alexandra and a girl her age Cass are best friends as Alexandra only had ever trusted Cass.
(Tris is n...