"Well, the Maker has a sense of humor. Darkspawn, and now a templar. I thought they all abandoned Lothering!" -Bethany Hawke
Bethany is the second cousin of the human from the Magi Origin, regardless of whether or not they are the Warden, through her mother, whose maiden name is Amell.
If asked why her parents protected her from the Circle so much she will reveal that her mother had a cousin who lost many children to the Circle, and if the Warden was a Human Mage (imported save) she will also state that one of the children became the Hero of Ferelden and saved them.
In the beginning of the game when Varric is telling the legend of the Champion, Bethany has much larger breasts, clearly demonstrating Varric's tendency to exaggerate.
When approaching the Qunari compound at the Kirkwall Docks, Bethany will mention that one of them killed her best friends back in Lothering, which is a reference to Sten from Dragon Age: Origins.
In the Chantry, Bethany may mention Leliana, saying she misses her telling stories in Lothering.