... By the way, Porthos, Constance, Arthur, Isabela, Jamie, Stiles and Snow all know about Her Majesty and I. I'm pretty sure Snow's husband does, too, and Merlin. [He didn't tell them, but they know by proxy.]
Anyone else doesn't. At this point I don't think it makes too much sense to try and keep it a secret, but it's difficult for her. I think she'd assume people would judge her.