Maybe there are some personal and private reasons for the king to wait with a recognition of Delphine. Maybe there were some fights in the past that the king made make this decission. I think the whole thing is far more complex than most people know/think. And of course it is a very emotional thing. And what after he will have recognised her? Must she be invited to the photosessions, to the defilé of 21 july? And what about queen Paola, she has her sentiments too, she must feel humiliated. There are obvious serious things happened in the seventies, from which we only know the top of the iceberg.
But of course, after all, everybody knows he has a daughter, that a recognition with good agreements, everybody may be happy