The Haunted Well

My book is about to friends named Catherine and Savannah. They went for a night walk and come across a well. They started to hear strange noises. And whispers, then the next day they went to file a report and Catherine was told she has symbols of a well In her eyes. Savannah was always the brave one never really cared. Then something strange happens to Savannah and Catherine.
I have also got some symbols hidden across the pages.