It even still seems off because of the group she was running with, the whole "necessary evil" thing should have been evident already.  So they save her (according to them I didn't watch the 4th season) from zombies or whatever, they patch her up, they let her kill mr rapey with no consequence, they help Carol even though they had no reason to, and she's upset because they want her to mop the floors for some food?     

 

As far as the prisoner thing, Dawn or whatever her name is made it sound like people "escape" all the time but always just end up coming back.  Everybody hates Chris was gone like a day and almost gets killed, so of course they come back the world outside sucks.  Like I said the whole thing seemed contrived, just her walking up to stab Dawn seemed goofy and out of place imo

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