Theodosia and the Last Pharaoh — R.L. LaFevers

Theodosia sets off to Egypt to return the Emerald Tablet -- embedded with the knowledge of some of the ancient world's most guarded secrets. Accompanied by her cat, Isis (smuggled along in a basket), Theo plans to return the artifact, then explore the mysteries surrounding her own birth and oh, yes -- help her mother dig up treasures on her archeological expedition. But nothing ever works out as planned, especially when a precious treasure appears suddenly, and then just as suddenlydisappears. . . When the Serpents of Chaos get involved, Theo finds she's digging up a lot more than she expected!