Do you test your BG after meals? This is Mayo-clinics rule: When the A1C test is used to diagnose diabetes, an A1C level of 6.5 percent or higher on two separate tests indicates you have diabetes. Have you had a (OGTT) test. Your next A1c could be 5.3...;-)
If you do not have enough iron in your bloodstream, your A1C test results may be falsely high.
You need some tests done but one A1c test does not get you a ...yes diabetic diagnoses!
I have never agreed with this pre-diabetic diagnoses for a type 1...if your Type 1 it's a yes to Antibody's except in some rare genetic types of Diabetes. Remember the odds are still in your favor that your not a Type1. But since your Mum is a Type 1 you should have no problem getting your Doctor to run some Antibody tests.