Harper bounds towards us, each step sending a brown spray of mud up her dazzlingly white trousers. Each slippy stomp is followed by a mischievous howl of delight; she’s made it her mission to destroy the pair of brand new trainers on her feet.
“I just love splashing in all the puddles,” she announces triumphantly, punctuating a particularly brave leap that sees her windmilling her arms for balance.
