Help........is there a legal way to prevent your 18 year old from getting a credit card?

My 18 year old moved out, and in with her true love forever, unicorns flying and roses and the happiness of lala land infatuation. First boyfriend.

So anyway....she has an ATM card she often uses which is fine. Deposit paycheck from low end job in the bank and carry an ATM card instead of cash. No problem.

However, mail is coming here about her getting denied a credit card because she didn't list her SS #. That won't be hard for her to get hold of, and once she does, I figure she'll be trying for credit cards.

Mr. Wonderful is 33 and we think he is sociopathic and we also think he is the type who will run up any cards to the max, and leave her holding the bill. No way we will bail her out, and right now she says she loves us and wants to have a good parental relationship and all that sweet jazz, but she won't listen to a single word we say about this creep, she is too duped. He is very charming, but people who worked with him for 8 years told us another story.

So anyway, for her own good can we keep her from getting credit cards somehow? Can we make her a legal ward who is incompetent or something like that? If she went before a judge she'd sound normal....how does that work? Can we get some financial control by declaring her one more dumb girl duped by a charmer?

Maybe a hard lesson is what she needs......and what she'll probably get...but I'd love to prevent credit cards if we could.

Any legal advice appreciated.