Breaking the Surface

After suffering a severe trauma, Brianna struggles to create a life with the man of her dreams. She is haunted by her past, and by a nameless, faceless little girl. She strives to hold on to her sanity and her life as she and her new family navigate one terrifying event after another.
After fleeing from all she knows and loves she is forced to make a new home in a new state. She is able to relax a little until evil finds her again. The faceless girl that had scared her so much has found Brianna in hiding as well.
Who is this girl, and is the love Brianna has found strong enough to help her break the surface of this nightmare?