You are blaming the victim now. She is no different than children raised in a cult. All of her attempts at escaping were dealt with swiftly by DD, whom I don't see shying away from smacking Gypsy around. The one investigation into their household came out empty.
And then, even if she were strong enough to tell the world it was a scam, it still would have been hard for her. She is an adult with no skills or education, with a mother in jail and no place to go. Add to that becoming a pariah in her city. Nowhere to go, no other solution but the one she found ...