Yeah, I think that was pretty much what we were watching. I'm surprised that I actually didn't dislike the episode. At first, I thought that the black and white wouldn't work for me, but then I realized that it did work to impress the bleakness of the situation. Not original, but it did get me in that everything's gone to hell mood. I also liked watching that killer dog. When they ran into that mass murdering mutt in the warehouse, the woman did say that it had to have been hiding or powered down or something, or it would have attacked them immediately. So they braved the warehouse thinking there were none of them around.
We were obviously led to believe they were looking for medicine or something extremely important. Nope. This was supposed to show a dangerous, actually almost suicidal mission, done for a basic human need that they still had left to acquire a teddy bear for a dying child - if I got that right.
As far as her slitting her own throat, I can see it. At the time we didn't really know if there were many, many more of these "things" around. At least that's how I took it. But she knew and she didn't want to go out that way. I have to admit to not understanding at first why she felt for something in her throat. I thought the killer dog might have shot poison bullets or something. That didn't make sense because that's all they would ever have to shoot. Yeah, I guess it was that she knew she couldn't dig out all the tracers.
I do think the teddy bears were meant to show that even if there were just a hand full of people left, they were still thinking of that simple human comfort.