Ouch. No more internet access until you're legal. The 12 grand will last her and I suggest you look into investments with her. Sad fact is that you probably won't be able to stop her unless you lock her in the basement with zero access to technology. You're also probably not going to get a teenager to understand that those pics are most likely going to haunt her for the rest of her life... All you can do is your absolute best to keep her safe and probably get her into therapy to understand that prostitution isn't the best choice she could make. It's lucrative, yes, but it's going to bite her in the arse for any job that does a decent internet dive on prospective applicants.

The pictures may not haunt her. If she is underage, then the pictures will be classed as child p0rn.