I personally don't find it discrete to invite the press into your home, pose for them, tell them you love a man but haven't told him yet, tell them it's not his fault that his marriage failed, tell them you are not dating him anymore, tell them that they will have plenty of photo-opportunities in the future, ~ 2 weeks before the engagement announcement...
I mean, nothing of this was really bad but discrete? Certainly not. We got all those infos from her and I think her behaviour towards the press was quite different than that of Mary, Maxima and Mette-Marit.
My remark was not meant as a criticism, it was simply a reply to someone who said Marie proofed she can be discrete because she didn't say anything about the engagement. As a matter of fact she gave the press a hint.