I liked the costume choice of the doctor at the end, simple but interesting and engaging. To be honest I was hoping for just one more scene showing a bit more of where she wound up in the end.
The story is sad, but of course that is fine.
And I rather liked the music you used, the tonal shifts and scene changes were good, and you got her feet in rhythm. I would suggest adding a shift in the music at the church and at the doctors as well.
You need to work on making your camera cuts a bit more smooth, there were many times when the characters would stop moving about a fraction of a second before the camera would change, it makes it feel very bumpy.
And as you mentioned, avoiding spelling and grammar errors is very important, but as long as you work on it you will be fine.
But I want you to know that you had a good, simple story that drew me in and made me want to watch the animation and see what was going to happen, that is a huge success in itself, especially because I am pretty damn picky about stories. Keep at it!