From some of your other posts (I think--?) it sounded like you were working out the boundaries and where to hold the line pretty admirably.
I think what sounds hard right now is detaching yourself from the disease. It feels like you are right back in it when she throws fits. It's very hard to love the person but put the disease at arm's length, when it gets all wrapped up in one angry body.
if you have any AlAnon literature around, I suggest you read more to help you feel the support. Also, just saying the Serenity Prayer over and over is another thing some parents have said helps.

Pat, I know you from the other site. I think you're about to hit bottom and you need to have a plan for how to deal with your decision. You've probably read over and over that sometimes we have to let the addict run out of options, we have to get out of the way so they can hit their own bottom and then pull themselves out of the hole they've created for themselves. I think the time is nigh. You're at your rope's end, and you know that there's only one way to go. Either your daughter seeks help or she's out of your home. There's no two ways about it. You know that. I know how hard it is to refuse your own child the shelter and security of home. We had to do that to our own son several times when he called us to tell us he'd been kicked out of two halfway houses 7 hours away. Turning him down when he asked to come home was the hardest thing we ever had to do. I wish I could tell you we didn't make mistakes. All the while he was homeless, couch-surfing and staying God knows where, we sent him money for food not knowing he was dealing drugs and who knows what else and was buying drugs with the money we sent him. We took him back after his last rehab only to have him start using again. Then his past caught up with him and he landed in jail for 6 months. He's back home but is now working on his recovery, and so far, so good. We'll continue to house him and feed him as long as he's working on his recovery, which, by the way, he has to work on because he's on probation. If he relapses, we'll have to cross that bridge again, and put him out, which will result in his going to prison instead of jail. Otherwise, we'll just be enabling him to dig his own grave. I recommend you read a lot of Nar-Anon literature. It will help you build up the emotional strength to stick to your decisions. God help you. God help us all. You are in my prayers, and so is your daughter. My son's been sober for 8 1/2 months, and I had forgotten that there was actually any good in him. Hidden below the muck and emotional terrorism and psychosis of drug addiction, there's still goodness in them; it just can't come out while they're using. Best luck and again, may God help you at this difficult time in your life.

It doesn't end. But it gets better. Thinking of you. One rule of thumb - if you are bargaining with an addict, you can't win. Just sold firm rules so you (and your child) know what to do when things get crazy.

Things have been going pretty well so far, Krista ended up back in re-hab after another episode, her ex filled a motion in court and took full custody of thier son and I agree with his decision. She was in the hospital for about 12 days and was transferred to another facility for a few more days, she has been taken off clonopin and is doing well, she seems to be handling her anxiety issues pretty well. She's been home for 4 day now and things are ok, her ex let her visit with her son twice so far and both visit's were good, he won't let him stay overnight yet and I do undertand. Next week they go back to Family court and she is going to have to plead her case nd see if the judge will give her joint custody back, I'm not so sure because this is the second time her ex filed an emergency motion taking him from her. Will see what happens, she has to prove herself and still has alot of work to do. She is on the right road but as we all know our addict's can make that wrong turn at anytime. I am getting stronger and have been very firm with my boundries this tie so I think she know's I mean business this time. Thank you for your thoughts, keep us in your prayers.