She alludes to Uthor Pendragon’s betrayal of her father strongly throughout. Morgana’s father had been one of Uthor’s generals who helped him win the Crown. During the victory celebration, Uthor met her mother, who was the most beautiful woman in the realm, becoming absolutely obsessed with having adultery with. The general chose civil war over willingly becoming a cuckold. After a month, To end the War, Merlin reluctantly agreed to aid Uthor in raping the General’s wife via deception by magically disguising him to look like the General so while he was away fighting, Uthor could just walk in & seduce her while she thought it was her husband. THAT was how Arthur was conceived! Morgana in turn dedicated her life to avenging her parents’ honor, regarding Arthur as inheriting the sin of his father’s betrayal of her father. Mordred had only ONE grandmother, & his grandfathers were bitter enemies.