So? Bethany doesn't seem to mind being free from circle and more than willing to kill Templars for it when you side with mages. Meredith is invoking the right therefore its she who is putting Bethany in danger. Meredith is condemning all mages for a crime they did not commit. Other people have valid reasons but your sense of Justice is laughable if you only killed Anders because he "put Bethany in dander". No offense of course.
My Hawke was all about family. Devastated as she was by the deaths of Carver and Leandra, I roleplayed her to be extremely protective of Bethany. 'Family above all'. Of course she saw Meredith was dangerous and that she would one day completely go nuts. So she favored the mage side, and supported Anders' case. But then he ble up the Chantry. And all Meredith said before invoking the Right was:
"The Grand Cleric has been killed. By magic."
Anders was the final push towards invoking Annulment, And yes, Meredith gave the final word. So Hawke sided with the mages, of course. And then rushed to the Gallows to save Bethany, but not before killing Anders. He gave the final push. Anders. Not Meredith. Despite how nuts she was. At that moment, he put Bethany in danger and put the fate of Hawke's family in jeopardy.