Keep fighting wanttobehealthy! You can do this. One day at time, just keep on keeping on.
I'm appalled that your attorney suggested 50/50 custody. What kind of person could possibly justify giving an abuser such as your AH the opportunity to further hurt your poor sweet girls. Disgusting! She should NOT be practicing family law with that kind of thinking.
I'm roiting for you. Good luck with the new attorney!