Thanks for that everyone !!!!!!!
I will just get hold of her and give her the bad news that she doesn't want to hear>>>>>>>
There are 155 places at each school so 310 in total. The numbers ranking NHGS or CH in 1st place seemed reasonably balanced last year so at position 261 her child is very likely to have got into to CH. This would only not occur if substantially more of the higher scoring children have placed CH in first preference rather than NHGS.
To slighly correct what someone else said about appeals, I think you can only appeal to schools that you placed as one of your preferences. You can apply to go on the waiting list for other schools in case of drop-outs etc.
In fact some children are admitted beyond even rank 310, because there are some children who have not placed the Grammar school at first preference, others are from out of area and may have got in somewhere else closer, others try for private school scholarships, and a handful move during the period. So I would say you friend's child has an excellent chance.