Record calls. That is abuse, what she was doing to D8 AND you. Some states have changed the law, where you don't need one person's consent to record calls..check on it.
She is definately on a bad down swing and D8 is suffering. You did everything right, my friend. I am so sorry for the hurt you and your precious D are feeling. I wish you could just keep her with you at all times.....
Keep your head up. Right now, you have got to shift your focus from W and what she might/might not do about your marriage to your daughter's happiness and safety.