mommy2Ro - so are you down to only 2 bf's now (evening and night?) If you are, you could try just cutting out the middle of the night feeds for two weeks and then, when you've got that sorted, tackle the evening feed.
Also, it sounds to me that your dd may need a little help in learning to go to sleep by herself. What time does she go to sleep in the evening?
To tackle the middle of the night scenario, when dd wakes, I would wait 5 mins to see if she settles herself first and if she doesn't I would go to her with water (you may find that she doesnt want this at all - my ds2 was just furious when I offered that instead of the breast), then a v.quick cuddle and some soothing words but straight back into cot. Unfortunately she is probably going to need to cry until she teaches herself to get to sleep.
I used a wind up lullaby toy with ds1 when I was in your position - it lasted exactly 8 minutes and I wouldn't got back to him until it had ended. Then I would wind it up again and again until he went to sleep on his own (I think it helped me to get through those 8 mins, more than him!). I know that some might say I was substituting the breast with some other habit, but it worked for me.
With ds2 I was able to be a little stricter, only because I'd done it before and knew that if I persevered it would work, so I did the above, but without the music. Also, I know that it is stating the obvious, but try to think of it as being cruel to be kind. I used to beat myself up about traumatising ds1 by leaving him to cry, but soon realised that it didn't have a lasting effect. I do remember how rotten it makes you feel when they cry and what a low ebb you are at during the night, but it is definitely worth sticking with it. My ds2 only woke for two nights and then slept through, so it might not be as bad as you fear.