Hi, I assume your in the UK.
If you test her bloods on your meter then the normal level for none diabetics is between 4 - 8.
If under stress or after eating or drinking high glucose drink or food, then it can be a little higher, but the body will bring this back down to between 4 - 8 if you retest after 2 hours.
I would only be worried if the result was over 20, if the result is over 30. I would say use the test fluids on your meter, to check its working, then retest. if over 30 phone the NHS helpline or nearest hospital for advice.
I hope this is the info you were asking for.
Eliminator