As I said before it's a 'Win, Win' situation. With such an excellent school on your doorstep, such as 'The Holt', it could be nothing less.
You've made the right decision for your daughter. She also has the added bonus of staying with her friends, and presumably a much shorter journey too.
The problem with Grammars, appears that they don't feel they need to do much to sell themselves. I felt the same upon visiting Reading with my son.
If it wasn't for the fact that he knows, quite a few boys who already attend, and that a few of his friends who are also trying for a place, I think after visiting our catchment school, he would of gone in that direction too. (It's only from acquaintances, whose children already attend, that I hear stories of such excellent practice, that keeps me focused too.
I wish you and your daughter the very best. She seems like the enterprising type of child who will do well anywhere!!