Your granddaughter is very lucky,she managed to finish the exam,a lot of the girls didn't.From what has been said the exam was very tough and all the girls found it difficult.
If you read the thread 'is the girls maths easier' you will see that there seems to have been alot of guessing going on.
I agree about the maths being a lot harder than the VR,as my daughter was feeling quite confidant after last week,but now is very despondent.This suprises me as she is quite good at maths.
I would tell your granddaughter the same as I am telling my daughter that just because they found it hard it doesn't mean that they haven't done well.
I hope this makes her feel better