Tatum, the 45-year-old daughter of O'Neal and first wife Joanna Cook Moore, admits her dad "had every right to be angry" after she came forward with shocking revelations about her relatives in her book A Paper Life.
O'Neal denied a string of allegations made in his daughter's memoir - including details of her parents' alleged drug use, her father's alleged physical and mental abuse of his children and claims she had been molested by a male friend of the actor.
Tatum adds, "No parent wants to hear their kid saying sh**ty things about them. Anyway, it's past; I've moved on. I'm older now, and I forgive him.".
But Ryan admits he still hasn't forgiven his daughter.
He tells America's Vanity Fair magazine, "She wrote a book - b**ch! How dare she throw our laundry in the street for money!".