Well you were talking with Juliette (the princess) as you always do: gossips, laughter, smiles, small teases when its about crushes too etc.. But it seems Dogtanian wanted to talk with Juliette about Queen Anne but actually half of the talk was just to see her. He brang with him the musketeers: Aramis, Athos and Porthos. And Juliette brang.. you. You were siblings it was her responsability to bring you with her. When they arrived their mouths were agape as they said in unison:

"PRINCESS JULIETTE HAS.. A SIBLING!?!!?"

well Dogtanian smiled kindly so you wouldnt thought that was an insult or smth. Porthos was still jaw-dropped. Athos was eye-wided. And Aramis' shock was replaced with a smirk and a chuckle too of course