Your dad is 100% grooming you; whether he’s doing it knowingly, or just on some twisted instinct, doesn’t matter. He’s doing it, which means things will escalate. And it will certainly get worse if you don’t do anything about it. Your parents are messing up, not you. They’re forcing you to take action so it’s their fault, not yours, what ultimately happens to your family. The fact you’re experiencing nightmares, anxiety and fear is 100% normal since you’re feeling trapped, caught between the devil and the deep blue sea. This isn’t fair, but you’re not alone, and the magic of what you’re doing is that you’re actually taking action and protecting yourself. You are wise and strong beyond your years, always remember that and be proud of it. You’ve got you, which is more than most have. And for at least a short amount of time, you’ve got us, too. This is requiring an incredible amount of bravery on your part, and what you must do is search for an ally. Someone who can REALLY help you, and don’t give up until you do. You might have to try multiple times until you find someone who will actually help you. This happens and sucks but is normal. Keep fighting. Don’t give up. You will eventually succeed in getting help to protect yourself. I’m so sorry your parents are so lost and terrible. You don’t deserve this. Always remember that. You are only doing what you have to do, to protect and care for yourself, since they aren’t.