Dh has never been with his x, he always makes a separate appointment. She was horrified when he suggested that they stood together at sports day, and told him that she would stand on the opposite side to see who dsd would run to , so after that he's just done his own thing with the school. It's better that way as it's always so difficult to raise any worries with his x, she's extremely sensitive and see any concerns as dh criticising her parenting skills.
She's never told dh anything about what dsd does at school, and certainly wouldn't pass on stuff from a parents evening. She thinks that when dsd is with her it's nothing to do with dh.