I read all 8 pages and
My thoughts, first of all, that going away to college is what some 12 step friends of mine call "pulling a geographic", where they hope that changing the location will equate with changing the problem.
Your daughter's problem isn't the boyfriend.
Your daughter's problem is herself.
What is it in herself that wants to stay with this guy, that is willing to throw everything, including possibly her own life, to stay with him? There's a hole in her somewhere that's causing this bad behavior, simply putting her in a different location still leaves her vulnerable.
I would start by sending her a message that says "I'm sorry, please come home and tell me what you need. I will do my best to help you be happy."
By doing this you're putting yourself on her side, instead of her and the boyfriend against you. You need to help her find the strength to see that the BF has no future with her, that she doesn't need him and he was nothing more than a tough learning experience for her.
Give her choices, let her feel like she has the power (because she does, she just doesn't know how to use it). Ask her "do you see yourself spending the rest of your life with him?" If (god forbid) she says yes, then ask her, "how are you going to help him be a better person so he doesn't hurt you?" "Are you ready to have children with him, and how can you protect your children if he is still having these issues?"
Really, give her the power to understand what she's taking on by dating this guy.
Don't tell her what a bad guy he is, because she loves him you force her to defend him. Allow her the space and help her grow in wisdom to see it for herself. Be on her side to help her grow away from him when she's ready, without saying "we knew he was a bad guy," etc.
In fact, tell yourself today you will never, ever say another bad thing about this guy out loud ever again. Buy a voodoo doll and stick pins in him every damn day to get through it if you have to, but every bad thing you say about him just makes the wedge bigger between you and your daughter.
Don't even talk about the financial stuff with her right now, she's not going to jump through any hoops for you and she's daring you to cut her off so she can use it to glom onto creep boy. Just act like it doesn't matter (because you're trying to save your daughter, so it really doesn't).
Act like her thoughts and opinions matter, say things like "Help us to understand what you're going through," and "how do you want us to behave". I'm not saying you have to do it, but she does need to be able to communicate her thoughts to you and feel like an adult doing it.
She will feel so much stronger with herself if you give her power this way...
just my 2c from somebody's who's been in the parent trenches.