I'm sorry for how things are going Snoodledoo. It sounds like she's just a little lost right now.
I don't think even she's going to enjoy camping out with friends for long, so just give it some time, and she may start to realize she's better off at home or back in school (whatever school that may be).
And I think you're taking the right approach (avoiding the drama, and just stating your expectations). Stay strong and give her some time. She's young, she has the time. When her cashflow runs out (it will eventually if she's not working) or her friends burn out on her stay or she sees them moving on without her to bigger and better things, she may start to realize that this pattern isn't going to be fun for long.
DD did fine this semester and is excited to be getting back to school next weekend. One of her friends has lost a roommate for spring semester (not coming back to school) and asked her to move rooms and join her. She's considering it because she gets along better with this girl than her current roommate (they were planning to change housing next year anyway since roommate is in a sorority now), but she doesn't want to hurt her feelings or burn bridges by making the move early. Luckily, she's got a few more days to make a decision. I guess we'll see how it plays out.
Her grades are also good. She was a bit annoyed that her A- in Spanish dropped her grade under a 4.0. But, seriously, complaining about any grade over a B sounds a bit obsessive to me.
She's debating about a mission trip opportunity over Spring Break. While I think it sounds nice, she would have to come up with her travel expenses (that's not something dad and I are willing to fund); and I'm not sure she can raise that kind of cash in time. I doubt she'll take it out of her savings, she's pretty stingy about that (lol). We'll see. She's starting to look at jobs near campus because she's hating that she's spending more than she's bringing in right now.
She held off on buying most of her books for second semester because she learned quickly that you don't always need everything on the list, and those materials are Expensive! A huge change from first semester when she insisted on having EVERYTHING for the first day of class because that's what the syllabus said. lol.
She's also thinking she's got a good shot at an officer position in the club for students in her degree field next year. That would be great since the officers arrange for speakers and tours of the hospitals where students spend their final year (so she'll get to know the coordinators at the hospitals well). And, of course, it gives her something extra to put on her resume when the time comes.
It's been nice having her home these last weeks. I missed the girl time. As I hoped (really hoped), she and her brother actually get along better now that they have had some separation, so that's been nice also.

All in all, a great break. I'm gonna miss her even more next semester.