just when I thought I was at the end of my rope after an exhausting 10 hour day back at work with so much to do and so little time to do it all in...

I get this:

Ms. Huscher,

Hello Ms. Huscher, I liked you letter.  I did understand all of it.  You know me, but I will tell you more about me. 

I live here with two older brothers. My parents, my two sisters, and my other two brothers live in Guanajuato, Mexico.  I want to finish the high school, if I can’t do that, I want to learn speak English to work for two or three years, and then, I will go back to Mexico to see my family.  I don’t know what I will do later.

I want to improve my life.  I’m looking for a better life for me and my family.

Ms. I don’t know if all of this latter is correct, but I’m try to write much better.  I realize you are my best teacher, my friend, thank you for help me.  Now I’m really feel great.  I’m learning too much in your class, I like it because you look so happy every day when you come to class.  One more time, I need tell you “Grasias” because I think teach ESL is not easy, but I’m learning.

That's why I teach.