The OP has stated here and on other forums that she has dyslexia. If you don’t know what dyslexia is:
Dyslexia
It is not her fault. It is a learning disorder.
Then, you start talking about her like she won’t be reading this thread. I’m seriously disturbed at the responses. God be with you all.
Now, to answer the OP’s question, getting your high school diploma is a matter that needs to be taken up with the school board in your county. Usually, the homeschooling is registered through the county. Has your mother registered you in the county? If not, she will probably need to take you down to the school board and talk with the officials about having you tested to see what grade level (curriculum) you are on. There are certain guidelines that must be met each year just like if you were in school. The test will register you on a scale to see if you have met all the requirements, and if you are on the 12th grade level, you will be able to graduate. In my state, they allow the graduates to be a part of the graduation ceremony at a public or private school, but that’s something else you will have to ask about. Hope this helps! God bless you.