Originally Posted by Saskia
To me the ideal height would be 14-15hh.
See I have to disagree with this. I would deffinatley not over horse her as that can lead to horrible disasters! I am 14 and don't ride hacks!!! As Saskia said the 1st ponies don't last long as you out ride them earlier on, so I think for now go small! In a competeters point of veiw STAY in ponies as long as possible because she will have the cute factor which you want to preserve! But most of her age group in Pony club/interschools ect will be on ponies!! There is no reason for her to go big!! A small horse can be just as successful as a larger one. You just need to give them a chance. I ride a 12.2 & 13hh pony, my best friend who is 16 also has a small pony that can jump grade two, A girl I know who is 12 rides an 11.2hh pony. You can't out grow your horse you can only out ride them, and as long as you persevere you good to go.
But this is my personal opionion