Three and a half stars.
I love these types of games. Artistic with a deep meaning behind it. One that makes you think. Usually these get more stars. But alas, there was a fatal flaw. As soon as my character arrived at the metro stairs, she didn't walk down with her mother. Instead, she floated above the stairs. When I pressed the left key, she began to fly upwards off the map. There my story ended.
Therefor, I do believe you need to work on testing the game and fixing the bugs before you release it. Or perhaps to work on your programming. Perhaps you should team up with someone because your ideas and style should not be silenced just because of this.
I look forward to more content from you.