For starters, this is pretty good, but short for an essay. "my Mother" - don't capitalize the M in mother unless you are caller her "Mom" or "Mother," but you have "my" so you don't need to do that.
In the second paragraph, "This fact alone..." should be "These facts alone..." because you are describing more than one thing. Put commas before "but".
I think that if you want to blow this essay out of the park, you need to write about a specific time when you had a deep connection or shared a great moment with your mother. Usually the best essays are the ones that reveal who your mother really is by what she does. For example, you can explain her hardships and what she and you went through. When writing, I find that people are really touched when I reveal things that may be embarrassing or things I want to hide; because when I read this, I felt like I didn't really get to know your mom, you were just saying good things about her.
I'm not trying to put you down, but just trying to help you make it better. I hope it helps. Good luck!