Justice... I believe that's the answer
By finding a common interest that both of those people would have whether it is music, Political views, culture or religion etc;
When you have different things
A. Since
it indicates an exhange or a reason
Well Elizabeth in the story killed all the marigolds but the marigold represent hope, that when everything is hopeless there will always be a piece of hope. I hope that helped and you might want to change that into your own words