Very nice!
I really like the style of drawing there and how you've managed to emphasise the separation and thus the concept as well. I think you've summed it up very well, and I feel as if quite a lot of people can relate to it too. I mean, you can be surrounded by so many people and yet still feel alone inside...
Great piece, and well executed as well! I like the subtle effect of the different colours and how the main character is in darkness, as if to really emphasise how alone she is.