Ouch, this is definitely a heart-breaker. Break-ups are never really that smooth, I find, and you've really included that in your story. How while they knew it wasn't going to work out, none of them were going to make a clean break, and dragged it out. It was sad how he just left. I like how you mentioned that it was the little things she missed, because I find in relationships, that is really what most people miss. Is those little small gestures that, at the time didn't mean much, but really without them it makes such a difference.
Even though, she's moving on, from what I can tell. She's not as weak anymore, and that's really awesome. She isn't... broken, I could say? She's not over him and she still obviously misses him, but she's going to keep moving. Aha, I like it, even though it's short it's got a lot going for it. :D