I've thought this for a little while, but now's a good time to bring it up: If I understand this correctly, Misaki is the original person, and Kieran is the product of Cro and Misaki's souls being in the same body for so long. It seems odd to me that Misaki is completely OK with Kieran being in control. She just kinda leans back and spectates her own life, like it's totally cool for someone else to pilot her body as long as it's not a murderer.
It's not Kieran's fault, and she deserves her own chance at life too. It's just strange that this is a complete non-issue.