R.B.
Children sometimes find it hard to to put situations and or feeling in words. I know you said your sperated and if your husband was at all abusive to you either verbal or physical your daughter may have witnessed it and is sensing your
fear or uneasiness around your ex.
May I suggest you giving your daughter some paper and crayons and ask her to draw a picture of her and her dad or an activity that her and her dad do togehter during her visits.
Children like to express themsevles in drawings, I know my kids do. You may find this helpful. I am hoping everything works out for your family.