YTA

If it was your money, you should have asked for it back the day she won it. Actually, you should have told her that you would expect her to hand over anything she won before she started playing. You would still be an AH in that case, but slightly less of an asshole. When you didn’t ask for the money up front or immediately after she won it, it became her money. You have no claim on it. You do not indicate that you told her you thought of it as your money. You have said nothing along the lines of telling her that it was yours, but she could keep it to pay bills/buy college textbooks or whatever. How was she supposed to know it was still “yours” if you never said anything? Is she a mind reader? Even if it was reasonable to assume you had some sort of claim to her winnings because you staked her gambling, you let the opportunity go by to make that claim. The fact that you are asking only for the amount she spent on the tattoo back shows that this only about your controlling what your daughter does with her body. If it was really about the money, you would have been demanding the entire amount back. Let me give you a friendly warning. I haven’t spoken to my father in more than 10 years because he spent more than 30 years trying to use money to control me, exactly the way you are trying to control your daughter. He couldn’t buy me a cup of coffee without having expectations about how I should react. Look up transactional relationships, seek therapy. Otherwise you will end up with children who don’t want anything to do with you or who are using you for your money.