The Heart of Wonderland

After Alison Clarke survives the accident that killed her parents, she begins to see things she knows can't be real. At first she fears she might be losing her mind, but she soon uncovers a family secret that leads her to believe her parents' death was no accident after all. Alison is tasked with protecting a magical gem that keeps her world safe from the rogue magic of Wonderland. When the gem goes missing, it's up to Alison to find it before the boundaries between worlds collapse. To save the inhabitants of both worlds, Alison must team up with Maddox, a mysterious boy who seeks the gem for his own reasons.