Third Time's A Charm by Linda Kay Silva

From a land of ancient mystery to the seafaring world of Elizabethan riches, Jesse has traveled—she has no choice.

Her empty life turned upside when she discovered a time portal, and fate has handed Jesse Ferguson the power to visit her own pasts. Power brings responsibility and in this third volume of the Across Time series, the ghosts of ancient Egypt that call for her intervention. The same ghosts that threaten her brother.

An unsolved crime in the present seems to have clues in the temple of Isis, pulling Jesse between two duties: to her family in the now and the ill-fated Queen Nefertiti in the past. Not even sure what kind of beings she’s fighting and only beginning to understand the wrong she’s trying to right, Jesse will not find peace, anywhere, until she solves the puzzles.