Telling Sophie things in general is a terrible thing if you don't want her blabbing it because she doesn't know you're not supposed to blab Rosepuff. But surely it wasn't a bad thing and really, Sophie didn't want Jade thinking Rosepuff was saying bad things! And he did ask...

"It isn't anything bad. She said you were worried about your friends." She explained helpfully. Sorry Rosepuff~ "That's not strange, is it?"