Your daughter may need some counseling. She's always been unusually insightful, a good therapist may be able to help her maintain healthy boundaries with your ex.
It hurts, I know - I'm dealing now with my adult children and their troubled relationship with their narcissist father.
I think you are right. I have looked for a good therapist with reasonable hours in the area, and I can't find one. I talk to my T about how to help her handle it.
The sad part is she loves his so much and hates how he treats everyone.
I know that feeling all too well.
She incredibly insightful. More so than a lot of the adults I know. I can't sneak any BS past her.