In Florida she could be held civilaly liable and be sued, but that's about it.
We do have a culpable negligence statute that by the defination would technically fit the bill of the situation, but it would be hard to prove that she completely allowed him to drive, and that he didn't "demand" to drive. Culpable Neglience also plays a factor in manslaughter charges. However, I've never seen someone being charged with it for allowing a DUI to drive. Too hard to prove in my opinion. I am working a fatality right now where a motorcyclist was killed who was DUI, and he was allowed to drive off. I just can't prove it beyond a resonable doubt. Only thing I can do is write a good report and let the family deal with it in civil court.
"I would rather my boss give me a butt kicking for being over the top than a eulogy for not being thorough!" ~~~~~ Aussie George
"It's an American police station. Guns are easier to find than a working stapler." ~~~~~ smcc366