How do I get this through to my daughter's teacher? Is this a good plan?

There are actually 2 other forms close to dyslexia. One is strictly with numbers and being seen backward. The other is when comes to writing you write backward. I have the second form. When hand writing things(typing sometimes also) I have to go slow or it will end up looking like this "sdrawkcab". I am not sure how thinks are done in England. But here you can request the school test her. Kids can be tested at age 5 here. I wish you and her good luck.