My review :
From the start to the end it did not deviate from the main theme which is a good sign of your growth as a writer. The story was really emotional and I felt like crying when I read the letter. You involved the readers with the characters. So a good job. Also the line which I read at the first chapter was so awesome that I felt like asking whether you have written it provides not. Kudos to your effort. Good word usage as well.
Weakness :
The only weakness which I personally felt was excessive drag at times in both the first as well as second chapter. I had to skip some of the things written.
It is a must read for all those who can bear tragedy. You have the talent to become a bestseller. Believe me.
Overall rating :9/10