Michelle Lowery Combs: 2 books

A family secret, a mysterious lamp, a dangerous Order with the mad desire to possess both. Ginn thinks she knows all there is to know about how she became adopted by parents whose number one priority is to embarrass her with public displays of affection, but that changes when a single wish starts...

To save her family, Ginn uses her newfound genie powers to transport herself and her friends to 16th century Prague. Only one thing there remains the same as at home:  she can't let anyone know what she really is. The Emperor of Prague and those closest to him are obsessed with magic. In pursuit...