Hi Rooskers, just to say you are doing brilliantly. My W walked out 5 years ago and left the 4 children with me so i have some idea of what you are going through.
You are handling all this c@ap better than most and you rightly point out that your D is the focus here. Keep on being her rock , validate her feelings and let her vent. Your stance on not bad mouthing W is the correct one, your W is caught up in her own narcissus right now and mayne be for many years to come.
Don't hesitate to let your lawyer know of the various threats etc.
Please take time for you, this may feel that it's a hill too big to climb but it's not, read the posts on here , people move forward with thier lives and flourish. Keep positive, for you and your D who seems a very lucky girl to have you as her dad. Follow the wise words of the moderators on here and the very wise words of the site.