I would move forward with the divorce as quickly as possible. I would not see her alone at your house anymore if possible. Meet her in public. She is unbalanced and dangerous. It doesn't matter if you feel sorry for her. She needs a lot of psychological help. You can't change her and you should not take her back if she comes begging. Sorry to sound harsh, but the way in which she attacked you was calculated in its cruelty. Time to let her go and move on to a better life.
Her opinion of your ADD is irrelevant. A lot of people have ADD. It's not a big deal. She's using the topic to try to shame you. Stop talking to her and stop texting her and stop meeting her in private unless you want something else bad to happen. Sorry if this sounds like a 2X4, but it's time for your denial to end.