I know how the 30-lb-loss bomb diet goes, but I'm so impressed to hear you lost another 45 on sheer will power! It truly is nice to have a reason to replace the *entire* wardrobe....
In my case, I was grateful for 2 things: for the overnight onset of weight loss, and for being forced to make changes to myself and the M that, frankly, just wouldn't have happened without a crisis. I often read in Newcomers some version of, "if only s/he'd told me s/he was that unhappy," but I don't believe anymore that anything less than tipping our worlds upsidedown is going to make us take notice. I guess I'm also grateful for having become a more forgiving person!
I'm really sorry to hear about your D's hair-pulling. I had an adult friend with that stress reaction, and know how unfortunate it was because it was so visible. I'm glad she's moving past that. I hope your reconcilliation goes smoothly and gradually enough that she's not affected again.