I think thats it....off to google it!!!!! thanks hunx

It is it!

Penny Pollard hates old people, Annette Smurton (who has her own horse), wearing dresses and doing homework.

On a school excursion she meets someone just as rebellious as herself - Mrs Edith Bettany - (nearly) eighty-one years old and a new friend for Penny.
Aww I loved it sooo much hope I can buy it! x

I could squish you Kaydee thank you xxx