I have some suggestions if you liked Secret of the Sirens by Julia Golding:
The gorgon's gaze by Julia Golding.
Mallins Wood is home to the last surviving gorgon, and Col's mother, the gorgon's supernatural Companion, is determined to save it from encroaching development--even to the point of endangering Col and his best friend Connie, the most powerful Companion alive.
The chimera's curse by Julia Golding.
The Graveyard Book by Neil Gaiman.
After the grisly murder of his entire family, a toddler wanders into a graveyard where the ghosts and other supernatural residents agree to raise him as one of their own.
Inkheart by Cornelia Funke.
Twelve-year-old Meggie learns that her father, who repairs and binds books for a living, can "read" fictional characters to life when one of those characters abducts them and tries to force him into service.
Dragon Slippers by Jessica Day George.
The sequel to What My Mother Doesn’t Know is