Dunno if its too far but I took my son here a couple of times
http://www.parkdeanholidays.co.uk/sc...FQyR1QodhmYYoA
Is caravans but they were spotless and roomy.... there was lots for children to do onsite, swimming pool, kids club, kiddies play area etc. and I enjoyed it so much I went back there about 4 years ago. Being Scotland there`s lots of others places to visit if she does get fed up with the beach. Good luck