8 year old daughters sugar level was 8.1about 10 minutes after tea - should I be concerned

hi everyone - brief background

My 8 year old daughter - is very fit and active and certainly not overweight

I am a type 1 mother so I check her blood every now and then say if she cuts her finger or starts drinking a lot of fluid all of a sudden . She has had a few quite high readings but then fasting readings the following day have been perfect so I havnt done anything about it.

Anyway she was playing in back garden straight after tea and she was only out there for 5 minutes before she came in with a cut on her foot so after I cleaned her foot I decided I would test her blood and it was 8.2! Is this high and would this be classed as pre diabetes? I doubt her food that she had eaten for tea would have been digested yet so I don’t think that was the reason for it to be high. I am really worried a fear I have passed down my illness please can you give me help on the sugar ranges as I am a bit unsure for children or if that even makes any difference - what do you think the best course of action is

Thank you for reading