How To Treat Chronic Nightmares In Children?

My granddaughter has suffered from chronic, almost nightly, severe nightmares since the age of three. These are not night terrors at all, but actual nightmares that she vividly recalls when she wakes up, and some she has remembered for years, they were so terrifying. She doesn t cry out or wake up during them, but is often extremely distraught when she wakes up and remembers them. They seem to occur most often just prior to her waking in the morning, but I m not certain. Does she need the help of a therapist? She is now 8 yrs.old.