I had recently rewatched the redub of R, and I noticed something.
The scene where Demande is starting to kiss Usagi, and that tear slips down her cheek just before Tuxedo Mask swoops in to save her. We see what appears to be high-gale winds start to blow around Demande, causing him to be blinded temporarily, which allows both Mask and Usagi to escape.
Now, stay with me, cause I'm about to blow your minds.
We all know Esmeraude has no love for any form of Serenity, be it princess, queen, Moon, or even Usagi.
What if...Esmeraude caused the high-gale winds?
Think about it.
There's no way Tuxedo Mask could have entered that palace by himself, let alone find Usagi. There has to be a field, shield, something to either keep out pests, or keep something in.
Esmeraude would be one who knows her way around the palace. Which means, she could also spot weaknesses in the shield, or even cause it to "glitch" for a moment or two.
Plus, her moment with Saphir kinda gives it away. When he asks her if she had a hand in letting them escape, and her little giggle before denying it, kinda makes me think she did it.