When is blood sugar too low for a 12 year old girl who is not a diabetic is and....is 95 too low in afternoon?

No: Blood glucose levels largely depend upon their timing with the last meal/snack or beverage consumed. A BS level of 95 falls within the fasting range for non diabetics, and may not be considered "too low" if separated by a meal for several hours. To address ongoing concerns, the child would need closer monitoring of BS levels, an evaluation by the physician for additional info. and testing.

No: A value of 95 is within normal. A blood sugar less than 60 would be concerning. If someone had a blood sugar less than 60 consistently and/or had systemic symptoms such as near passing out, dizziness etc then you should ask yourself why is this happening and consider and endocrinology consult.