troisoiseaux

To be honest I suspect that Mrs. Fleming's explanation, while true as far as it goes, is also her way of deflecting attention from this other subterranean reason for her disapproval. Julian thinks he's finally got to the bottom of her attitude toward him BUT IN FACT there's still another layer he never managed to excavate.

Now that Julian's announced his engagement to Hilary, I'm sure sure Mrs. Fleming will figure out some way to both continue dreading that he is secretly gay AND resent Hilary for stealing Julian away from her. She seems very resourceful. That circle can undoubtedly be squared somehow.