She's young, they do dumb things. IMO the worst thing you can do is to make it harder for her to go to college. I had friends that their parents did that to them and they never went anywhere while others parents stuck by their side through the bad grades and they turned out great and pulled it out of the mud. Being disappointed is one thing but making her work in the real world instead of keep working at it in college is nuts, seriously, she needs an education in this world to make it and Im sure someone will retort oh she blew it, she should have to suffer blah. If my kid ever blew it like that, Id redouble my efforts in keeping them in college not flipping burgers somewhere wasting their youth when they should be in college classrooms.