Our world's reflection in our mind

I was supposed to post this last week, but, as I am a moron, I completely forgot to, you know, write it. I'm deeply sorry.
Either way, I shall continue last post with something anticipated but completely unrelated. As I said last week, there was a story I wrote for a contest about a girl who builds a world in her mind and lives in it in stead of the real world.
It's not a ground-breaking idea, but it allows for many interpretations and possible storylines to stem from this.
Mine was for her to have always found reality boring, so she created her own little world with her own little friends. Her life was happy and cosy and she enjoyed every moment spent in there. Only one day her friends riot and throw her back into reality. She it faced with a vital decision: to escape from reality for good by means of suicide, to go back to her realm and seek forgiveness or to try and adjust to reality. She cannot adjust to the real world, so she tries to kill herself. Only, at the last minute, she realises that all she has done in this world, all she has left for eternity is her world. Only, if she dies, her world dies with her. So she decides to stop and ask her friends for forgiveness.
But there's a lot to be done with this: you could explore her past and what's made her seclude in a delusion, or how she interacts with her delusion, or have her adapt slowly to reality, or the drama of her family and so on and so forth.
Also, one could simply mirror the two: her delusion and reality, to see the measure in which they coincide. Moreover, one could expand this into a meditation upon the manner in which reality influences a delusion.