Oh my goodness, that was extremely emotional. I couldn't stop crying. Why did you have to kill them all?! :'( But it was awesome! Great job! I have never read anything like this before so it was new and exciting for me :D.
Just a tiny pointer (nothing major, and I know it can be difficult/boring sometimes) just be really careful about typos and small grammar errors? I know I'm guilty of it so don't worry but in future, be super careful and your stories will be even better (which is probably impossible judging this one!) :).
Great job!