I can definitely agree to what I've highlighted in red bold. In the short version of the event Leandra decided that she no longer wanted to live the life of luxury in Hightown, and so she takes of with an escaped circle mage who is now an apostate. She heads to lothering where she and her apostate boyfriend engage in marriage, and starts a family of their own. (I play as a mage so it may differ in other peoples stories) She produces 2 mage children: Garrett/Marian Hawke and Bethany Hawke from her now apostate husband. Fortunately her third child, Carver Hawke, did not possess magic abilities so at least he is safe from the Templars. Of all places to go to escape the horde of Darkspawn... She chooses to go to Kirkwall! A Templar dominated city! She truly didn't think of the welfare of her children when she made that choice.
I could never play as a rogue or a warrior in DA2 because I would become enrage with Leandra after finding out that the Templar's took Bethany to that dreadful place in the gallows; a place where Templar's abuses and sexually assaults their captive mages.. even threatening to make them tranquil if they report the abuse. I would rather have Carver betray me by becoming a Templar rather than to have my sister be sent to that hell hole circle.
I don't think that's fair at all.
For starters, there's no guarantee at all that any other city would be available to more Ferelden refugees. Plus, Leandra was under the impression that she had an estate and money that could help them build a new life. While that certainly did not pan out because of Gamlen, Gamlen himself also ensures that they have more coming into Kirkwall than they would have anyplace else, as they automatically have a roof over their heads free of charge, whereas anyplace else would have them living on the streets doing who knows what. And really, this is during a Blight. Risking Kirkwall with the greater chance of making a foothold sure beats wandering to an unknown city hoping that they don't end up living in a dark alleyway or worse, being kicked out of the Free Marches and back to Ferelden.
It's pretty strange that one would be mad at Leandra for Bethany going to the Circle. What's Leandra going to do? Refuse? The Templars would just arrest her and take Bethany anyway, or possibly put down another apostate because her resistance changed their mood, and they could even go so far as to just ransack Gamlen's hovel, kick them all out and leave them with nothing. Hawke could kill Cullen, but that would still leave them in a far worse state.
Anyway, as far as we can tell Kerras and Alrik don't do anything to Bethany, and while Kerras is a dick and Alrik is a proper creep, they can both be given the murder they ask for, getting at least two pests out of the way. And really, what's it matter in the end? The Circle system as we know it is kaput, and Bethany is free, so to speak.