Wishes and Wellingtons Series by Julie Berry

Maeve Merritt chafes at the rigid rules at her London boarding school for "Upright Young Ladies." When punishment forces her to sort through the trash, she finds a sardine tin that houses a foul-tempered djinni with no intention of submitting to a schoolgirl as his master.Soon an orphan boy from the charitable home next door, a mysterious tall man in ginger whiskers, a disgruntled school worker, and a take-no-prisoners business tycoon are in hot pursuit of Maeve and her magical discovery... moreMaeve Merritt chafes at the rigid rules at her London boarding school for "Upright Young Ladies." When punishment forces her to sort through the trash, she finds a sardine tin that houses a foul-tempered djinni with no intention of submitting to a schoolgirl as his master.Soon an orphan boy from the charitable home next door, a mysterious tall man in ginger whiskers, a disgruntled school worker, and a take-no-prisoners business tycoon are in hot pursuit of Maeve and her magical discovery. It'll take all of her quick thinking and sass to set matters right. less

Now that Maeve Merritt has surrendered Mermeros, the djinni she found in a sardine can, she expects her life will be dull as dirt. Mermeros, however, has other plans. Maeve's friend Tommy, the former orphan, has been adopted by Mermeros's newest owner. When Tommy's father tries to use one of his wishes, he and Mermeros go missing--and without a guardian, Tommy will be forced back to the orphanage... moreNow that Maeve Merritt has surrendered Mermeros, the djinni she found in a sardine can, she expects her life will be dull as dirt. Mermeros, however, has other plans. Maeve's friend Tommy, the former orphan, has been adopted by Mermeros's newest owner. When Tommy's father tries to use one of his wishes, he and Mermeros go missing--and without a guardian, Tommy will be forced back to the orphanage. Maeve, Tommy, and their best friend Alice embark on an adventure full of magic and danger to rescue Tommy's father and the djinni they've grown to love. less