Goneril and Regan had no loyalty neither to their father nor to their husbands. Explain

Regan and Goneril have been heavily tortured with resentment toward their fathers or siblings or anyone else whom holds power. As completely evil characters, they work laterally, fulfilling their evil role and not departing much from it. They are evil and become progressively so to the extent that Regan and Goneril are responsible for their own deaths. And one could hardly say Goneril is more at fault because she was the actual murderer in both occasions. We watched both women fight and claw for power from their father, husbands, Edmund, and each other. Whichever action or behavior fit their motive at the time, whether it was uniting against their father or becoming rivals for Edmund's hand, they eagerly took it on. Their jealousy and hostility bore itself up to the point that they barely resembled women as we noted was commented on by both Lear and Albany.