They Can't Know.

Lillian Sapphire Tonks. Daughter to none other then Nemphdora Tonks the young witch. As word spreads of the return of The Dark Lord; Nemphdora moves her and her daughter into the area so that she can work with the Order. Which means Lillian will be sent to Hogwarts under the guidance of Harry Potter himself. But what happens when Lillian sorta finds herself a new guide and figures out a secret she didn't wanna know?