Re: I thought it was a great ep
I think the idea is that Ashildr/Me has developed a calloused exterior to humanity because she's seen so many fade and die and because her memories fade. [by comparison to the Doctor who can run off in the TARDIS to somewhere different each time]
It is then the Doctors insistence that individual lives ( whether a half blind/half deaf old man at the end of his life, or a common criminal about to be executed) matter that gives her renewed purpose. It is probably significant to this that the only killing she considers in the course of her plan to escape are of those near death anyway.
Biting the hand that feeds IT
