Little Secrets (2001) on Netflix

A tale centering on Emily, a plucky pre-teen (and violin virtuoso) who is entrusted with her young neighbors' most private and cherished secrets. Every Wednesday, Emily sets up a booth in her backyard which regularly attracts the guilty young souls of the neighborhood. These include Philip - the new kid on the block - whose clumsiness with an expensive chess piece (and his interest in Emily) make him one of her most challenging clients. But comedic complications ensue when the Secret Keeper 'normally so trustworthy' suddenly finds it difficult to keep all of her neighbors' secrets to herself.