I thought the same about Enid. I'm pretty sure the confirmation came whenever Aaron saw the bag of with the pictures of the place in it, the 'JSS' mantra, her being so completely calm when opening the door to Carl's home (there's a difference in her being calm because she's seen some shit...and knowing that she's safe; that amount of not giving a shit on her face when Carl opened the door makes me think she knows she is safe), along with what's already been discussed. Them having that line cut off is more than likely the writer's attempting to have people discuss and wonder (same for Morgan's 'kill' and the quick edit away); but at this point I think it's both pretty obvious as well as a great decision to make her character even more interesting. I'd love it if it were true. Also the opening sequence alludes to as much with her spending so much time out on her own as well as being so mentally destroyed and having to do whatever it takes to survive.
Really great episode though. I found myself thinking "Ohhh Morgan..." and shaking my head until that final scene. He's a badass but the sparing of lives was becoming annoying...then finally that ending sequence came and I was glad he wasn't going to let that monk-like morality and righteousness turn him into a fool. That is...if he killed him. That is when those abrupt cuts of editing get to me. I really liked them in the beginning with Enid because we knew that she killed the walkers (and it wasn't hinging on the story), it just made for a more interesting direction and cinematography, especially when at this point in the show we've seen it ten times over. But when it's meant strictly to be a veil and an attempt to fool, it's a bit annoying. Kind of like the end scene to last season with Rick killing Porch Dick. In fact it's the exact same... We're all pretty sure he's dead, and most are totally sure (it's just bit less in this case given Morgan's propensity for mercy as well as the fact that he had a stick, not a gun), but that sliver of wonder isn't so much a mystery as it is a thorn in my side.
However, I think the kicker and subsequent confirmation is the last beautiful shot, which leads me to believe Morgan finally killed. Again though, because of that editing, it's a back and forth of...well...maybe not. We'll see! I think and hope he did. There's a balance that needs to be struck and before he was on the other end of evil and now he's on the far end of zen...he needs to sit right in the middle where Carol pretty much is.